.: Primes
Factor Calculator 5.9.6
Calculate the factors of any number with a single click. Small application window allows simultaneous use with Word, Outlook, Excel, etc.. Listed on the Math Forum @ Drexel (University) for Middle School, High School and College, ages 6+. Free one month trial. Only $4.95 for the suite of 10 utilities, also includes Prime Number Calculator and Primality Tester.
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Prime Number Spiral 7.42
The Prime Number Spiral (a.k.a. the Ulam Spiral) is formed by marking the prime numbers in a spiral arrangement of the natural numbers. This is software is for exploring the Prime Number Spiral.
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Primality Tester 5.6.2
Test any number for primality with a single click. It uses a deterministic test and uses the Sieve of Eratophenes logic. Small application window allows simultaneous use with Word, Outlook, Excel, etc.. Uses audio confirmation. Listed on the Math Forum @ Drexel (University) for Middle School, High School and College, ages 6+. Free one month trial. Only $4.95 for the suite of 10 utilities. Student discount: 10%. Educational discount: 20%.
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Prime Number Calculator 4.9.4
Calculate the prime numbers between two any limits. It uses a deterministic test and uses the Sieve of Eratophenes logic. Displays the result in decimal and binary stars. Small application window allows simultaneous use with Microsoft Office, etc.. Listed on the Math Forum @ Drexel (University) for Middle School, High School and College, ages 6+. Free one month trial. $4.95 for the suite of 10 utilities. Student discount. Edu. discount.
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Factorizer 9.42
Factorizer may be used:
(1) to get the prime decomposition of all numbers in a range of numbers
(2) to get all factors of a single number or all factors of all numbers in a range
(3) to find only the prime numbers in a range of numbers
(4) to find pairs of prime numbers (e.g. 107 and 109) in a certain range
(5) to count (without displaying) the prime numbers in a range of numbers
(6) to find Fermat and Mersenne primes < 2,147,483,647
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