Calculate the prime numbers between two limits. 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+. 99¢ only. Educational discount: 20%.

Calculate the prime numbers between two limits. It uses a deterministic test and uses the Sieve of Eratophenes logic. Displays the result in decimal and binary stars. Beeps to confirm primes calculated. 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.. Sits in tray until needed. Click minimize (_) to send to tray and click icon with either mouse button to pop up. Free one month trial. Purchase for 99¢ only. Educational discount: 20%.