Test any number for primality with a single click. It uses a deterministic test and uses the Sieve of Eratophenes logic.

Described on The Math Forum @ Drexel. Recommended for Middle School, High School and College, ages 6+.

Small application window allows simultaneous use with Word, Outlook, Excel, etc..

Minimizes to tray and pops up when clicked to test for primality. Audio confirmation; beeps high if prime and beeps low if has factors.

99cents only. Educational discount: 20%.

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