Lots of Things to Do with Prime Numbers

Check to See If a Specific Number Is Prime

Enter a number in the box below, and click [ CHECK ] to see if it is a prime number.

 [ CHECK ]   

Listing all Prime Numbers within a Given Range

Enter the starting number and ending number for your prime search, and then click [ GO ]; the numbers within that range that are prime will be displayed in the text box below. Note that the higher the ending number, the longer it will take to run the calculation, and some browsers handle the calculation more rapidly than others.

Starting Number:   
Ending Number:    [ GO ]
Status: