Just input a maximum number in the box below, press 'Go!' and the Javascript will calculate the prime numbers from 1 to the number you entered. Requires Internet Explorer 4.0 or higher.

1 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97

WARNING: Asking this webpage's Javascript to calculate prime numbers beyond 1000 may tie up your computer or slow it down.

Calculating...