Testimonials

I am a person who loves stats. I do a lot of bingo cards and games. I use Random.org for …

1. Bingo Game No. 1–75 for my 18,000 cards, 90 bingo variations
2. The game of Racko No. 1–60
3. Memory using the 0–9 numbers each game I use 10K numbers
4. Now with the deck of cards I can study card games more often, I play cards on paper, any game using a deck of cards
5. maybe you can do a shuffler using Uno or Skip Bo or other card games

I thank you for making the site. It saves me time. I used to do the old fashion way of making game numbers, using a bingo cage and balls.

6. I also use the lottery and Keno Numbers too…

—Daniel Snyder, Butler, Missouri, USA

I study the life-cycle of viruses, and I perform lots of tissue culture experiments. In order to try to develop theories to explain some results I was getting, I wrote a computer program that uses a Monte Carlo scheme to simulate infection of cells by viruses. I need a different random number for each simulated virus, in order to randomly assign it to a cell that it ‘infects.’ In order for the results to be meaningful, I need to simulate tens of thousands of ‘cells’ and hundreds of thousands of ‘viruses,’ so I need hundreds of thousands of random numbers. The pseudo-random numbers produced by the Apple Macintosh built-in linear congruental generator proved themselves to be not good enough for the job, as I found that some numbers were chosen too often, a definite no-no for my purposes. Then I saw the NY Times article about this site and gave it a try. First I tried using Random.org numbers to seed the Macintosh generator at frequent intervals during the execution of the simulation, but it did not solve the problem. So I tested using all numbers from this site and they passed my quality test. So now I download several batches at a time of 10,000 numbers between 1 and 40,000 and string them into big files as the sources of my numbers. I'd like to be able to download them in even bigger batches, though. Thanks for a truly useful service!

—David N. Levy, University of Alabama at Birmingham