Shift-click the flag to begin. This engine will find as many prime numbers as you could ever want! When it asks you for a Mode ID: Type * then [ENTER] in the box to find all prime numbers up to a number. Type # then [ENTER] in the box to find all prime numbers up to and including the <number>th prime number. Enter anything else for it to go on forever, and find EVERY prime number. (<number> means the number you enter in the next stage.)
Idea from a 'Numberphile' video. (Search Numberphile on YouTube if you like maths.) The 1st prime number is 2. The 10th prime number is 29. The 100th prime number is 541. The 1000th prime number is 7919. The 10000th prime number is 104729. The 100000th prime number is 1299709. The 1000000th prime number is 15485863. The 10000000th prime number is 179424691. The 100000000th prime number is 2038074743 Nobody appears to have found the 1000000000th prime number though, but you could find it with this project (might take a year or two or ten though).
