Question 1

What is Numero Chance?

Accepted Answer

In short: we analyze 25 lotteries worldwide with 16 analysis algorithms and give you the predictions for free. No promises of winning -- just serious analysis to help you play smarter.

Question 2

Is it really free?

Accepted Answer

Yep, 100%. Predictions, stats, the performance report, archives -- everything is open access. No account required, no hidden premium tier. We fund ourselves with ads.

Question 3

How does the analysis work?

Accepted Answer

We combine two layers: a core suite of 16 original algorithms (maximum coverage, anti-popularity, random control...), backtested walk-forward and benchmarked against random, and a catalog of historical exploratory techniques (frequencies, Markov, coverage, Monte Carlo...) kept for research. All results are public.

Question 4

Which lotteries are supported?

Accepted Answer

We analyze 25 international lotteries: Loto, EuroMillions, EuroDreams (France), EuroJackpot, SuperEnalotto, Million Day (Europe), Powerball, Mega Millions, Millionaire for Life, Lotto 6/49, Ontario 49 (North America), Mega Sena, Melate, Chispazo (Latin America), AU Powerball, Oz Lotto, NZ Lotto (Oceania), SA Powerball, SA Lotto (Africa), and more.

Question 5

How many languages?

Accepted Answer

6 languages: French, English, Portuguese (Brazil), Spanish, German, and Italian. The site auto-detects your browser language.

Question 6

How is draw data collected?

Accepted Answer

Our data comes from official sources and recognized reference sites for each lottery. Results are automatically collected after each official draw and stored in our PostgreSQL database. We verify data consistency through cross-checks between multiple sources. Our history goes back thousands of draws for the oldest lotteries, providing a solid statistical basis for our analyses.

Question 7

What is the difference between the measured core suite and the technique catalog?

Accepted Answer

The core suite consists of 16 original algorithms (Maximum Coverage, The Contrarian anti-popularity, The Booster triple-lever, Random Control...) backtested walk-forward on real history: their scores are compared to a random baseline (z-score), and that measured performance determines the per-lottery recommendation. The catalog, on the other hand, gathers a catalog of historical exploratory techniques covering 6 families, from frequency statistics to coverage strategies, kept for exploratory and educational purposes. The two layers are complementary.

Question 8

What is Shannon entropy in the dashboard?

Accepted Answer

Shannon entropy is an indicator borrowed from information theory that measures the degree of disorder or unpredictability of a system. Applied to lottery draws, a high entropy (close to the theoretical maximum) means numbers are distributed almost uniformly, confirming the random nature of draws. An abnormally low entropy could theoretically signal a bias, but in practice, certified lotteries always display entropy very close to the maximum.

Question 9

Can I use Numero Chance on mobile?

Accepted Answer

Yes, Numero Chance is fully responsive and adapts to all screens: smartphones, tablets, and desktop computers. The interface is optimized for smooth touch navigation. All features are accessible on mobile, including the interactive dashboard, predictions, the performance report, and archives.

Question 10

How are the probabilities displayed on the site calculated?

Accepted Answer

The base probabilities (chances of winning the jackpot) are exact mathematical calculations based on combinatorics. For example, for Powerball (5 numbers from 69 + 1 from 26), the probability is 1 in 292,201,338. The statistical indicators in the dashboard (frequencies, gaps, correlations) are calculated from the actual draw history using standard statistical formulas. It is important to note that these indicators describe the past and have no predictive power over future draws.

Question 11

How do you measure algorithm performance?

Accepted Answer

Walk-forward: for each past draw, every algorithm generates its grids using only data prior to that draw, then we compare against the numbers actually drawn. No future data enters the calculation, so no temporal cheating is possible. The displayed ranking is the average of these results over dozens of draws.

Question 12

What is the 'random' baseline displayed everywhere?

Accepted Answer

For each lottery, we also generate purely random grids on the same history. It's our control group: if an algorithm doesn't beat it over time, its edge is zero -- and we display it anyway. That's the foundation of the report's honesty.

Question 13

How is the recommended algorithm chosen?

Accepted Answer

Through a composite score: 70% walk-forward backtest (gap vs random, statistical significance) and 30% live performance over the last 30 draws. If no algorithm significantly beats random, we recommend Maximum Coverage, which guarantees the best dispersion of your grids -- and we tell you so clearly.

Question 14

How can I verify your results?

Accepted Answer

Everything is public: every prediction is dated, archived before the draw, then scored automatically afterwards. The archives are accessible from the Results section, with the complete history, hits and misses alike. No result is ever deleted.

Question 15

How do I check draw results?

Accepted Answer

Go to the 'Results' section accessible from the main menu. You'll find the latest results for all 25 lotteries, automatically updated after each draw.

Question 16

What do the archives contain?

Accepted Answer

The archives contain the complete draw history with, for each draw, the winning numbers, our prediction scores (number of correctly predicted numbers) and the ranking of the best algorithms.

Question 17

Are results in real-time?

Accepted Answer

Our results are automatically updated within minutes of each official draw. The system retrieves winning numbers from reliable sources and immediately calculates scores.

Question 18

How do I read prediction scores?

Accepted Answer

The score indicates the number of correctly predicted numbers. For example, 3/5 means 3 of the 5 winning numbers were present in the grid. The average and best scores are displayed for each draw.

Question 19

Can I see the complete history?

Accepted Answer

Yes, archives are available for each of the 25 lotteries. Results are sorted from most recent to oldest. Each draw shows full details: winning numbers, scores, and algorithm rankings.

Question 20

Which is the best algorithm on average?

Accepted Answer

Performance varies depending on lotteries and time periods. No algorithm systematically dominates all others across all lotteries. This is precisely why we use 16 different algorithms: by diversifying approaches, we maximize the chances of having at least one good result for each draw. The archives allow you to objectively compare the performance of each method on the lottery of your choice.

Question 21

How do I read the dashboard heatmap?

Accepted Answer

The heatmap visually represents the frequency of each number's appearance over the selected period. Warm colors (red, orange) indicate numbers that appear often, while cool colors (blue, purple) indicate rare numbers. Use the slider to adjust the number of draws analyzed and observe how trends change depending on the time window chosen.

Question 22

Are results independently verifiable?

Accepted Answer

Absolutely. All winning numbers displayed on Numero Chance come from official results published by lottery operators (FDJ, Powerball, Mega Millions, etc.). You can verify each result by consulting the official website of the relevant lottery directly. Our prediction scores are calculated automatically by comparing our pre-generated grids with the actual drawn numbers, without any post-hoc modification.

Question 23

Do you guarantee winnings?

Accepted Answer

No, and we want to be very clear about that. Lottery draws are random -- period. No method and no algorithm can guarantee you'll win. Our tools help you analyze, not predict the future. Play responsibly.

Question 24

Tips for responsible play?

Accepted Answer

Golden rule: only play with money you can afford to lose. Set a budget and stick to it. The lottery is entertainment, not a career plan. If it stops being fun, check our Responsible Gaming page.

Question 25

What if I have a gambling problem?

Accepted Answer

In France: Joueurs Info Service at 09 74 75 13 13 (free). UK: GamCare at 0808 802 0133. US: 1-800-522-4700. International: Gambling Therapy (www.gamblingtherapy.org). Don't hesitate to call -- it's confidential.

Question 26

Adults only?

Accepted Answer

Yes, strictly 18+. It's the law, and we respect it.

Question 27

Do you sell lottery tickets?

Accepted Answer

No. We don't sell anything, we're not affiliated with any operator, we don't process bets. We do statistical analysis, that's it. To buy a ticket, visit your local retailer or your lottery's official website.

Question 28

What are the real chances of winning the lottery?

Accepted Answer

The odds of winning the jackpot are extremely low and mathematically fixed. Powerball: 1 in 292,201,338. Mega Millions: 1 in 302,575,350. EuroMillions: 1 in 139,838,160. French Loto: 1 in 19,068,840. To put these numbers in perspective, you are more likely to be struck by lightning (about 1 in 500,000) than to win the EuroMillions jackpot. It is essential to understand these probabilities before playing.

Question 29

What is the gambler's fallacy?

Accepted Answer

The gambler's fallacy is the mistaken belief that a random event becomes more or less likely based on previous results. For example, thinking that a number that has not appeared for a long time is more likely to appear in the next draw. This is false: each draw is an independent event. The balls in the machine have no memory. Numero Chance displays historical statistics for informational and educational purposes, not as predictive indicators.

Question 30

How much money can one reasonably spend on gambling?

Accepted Answer

There is no universal amount, but the golden rule is simple: never gamble with money you need for essential expenses (rent, food, bills, savings). Your gaming budget should be treated as an entertainment budget, just like going to the movies or dining out. If you regularly spend more than planned or borrow money to play, these are serious warning signs.

Question 31

Can minors use Numero Chance?

Accepted Answer

No. Numero Chance is strictly reserved for adults aged 18 and over. Although we do not sell lottery tickets, our content is related to gambling and is therefore subject to applicable regulations. Lottery games are prohibited for minors in all countries where we operate, in accordance with local legislation.

Question 32

Is Numero Chance regulated?

Accepted Answer

Numero Chance is a statistical analysis and educational content website. We are not a gambling operator: we do not sell tickets, take bets, or process any financial transactions related to gambling. We comply with the GDPR for personal data protection and display mandatory warnings about responsible gaming in accordance with French and European regulations.

Question 33

What technologies are used to build Numero Chance?

Accepted Answer

The backend is developed in Python with the FastAPI framework and hosted on Railway. The PostgreSQL database stores all historical draws and predictions. The frontend is built with React, TypeScript, and Vite for a fast and responsive experience. The analysis engine combines 16 statistical algorithms, walk-forward backtested.

Question 34

How often is the data updated?

Accepted Answer

Data is updated automatically after each official draw, typically within minutes of results being published. For French lotteries (Loto, EuroMillions, EuroDreams), updates typically occur at 3:00 PM and 10:00 PM. Predictions for the next draw are generated automatically as soon as the previous draw results are integrated into our system.

Question 35

How many historical draws do you analyze?

Accepted Answer

Our database contains thousands of draws for each lottery, often going back several years or even decades for the oldest lotteries. The exact number varies by lottery: the French Loto and EuroMillions have several thousand draws, while more recently added lotteries may have a few hundred. The dashboard shows you the exact number of draws available for each lottery.

Question 36

Is my personal data protected?

Accepted Answer

Yes, we take data protection very seriously. Numero Chance complies with the GDPR (General Data Protection Regulation). We collect minimal data, only what is necessary for the service to function. Your passwords are hashed with secure algorithms. You can export or delete your personal data at any time from your account settings. We never sell personal information to third parties.

Question 37

What is backtesting and how does it work?

Accepted Answer

Backtesting involves evaluating a prediction algorithm's performance by testing it on historical data. Specifically, we simulate what the algorithm would have predicted for a past draw using only the data available before that draw, then compare the prediction with the numbers actually drawn. This method allows us to objectively measure the reliability of each approach without hindsight bias. Backtesting results are accessible in our archives.

FAQ - Statistical Lottery Predictions