Prime Factory
A richly featured app for everything involving prime numbers.
Available utilities: -Test numbers for primality.-Calculate a number's unique prime factorization.-List every divisor of a number.-Generate a random prime, with the option to specify a range in which the prime is to be found.-Browse through a complete list of the first 10,000 primes.-Calculate pi(n), the prime counting function. This is the number of primes less than or equal to n.-Calculate the greatest common divisor (GCD) of two numbers.-Calculate the lowest common multiple (LCM) of two numbers.-Find the value of Euler's totient function, phi(n). This is the number of positive integers less than or equal to n that are coprime to n.
Most features allow testing of numbers up to 9,999,999,999,999,999 (10^16 -1).
This app is completely free and is not ad supported.
Available utilities: -Test numbers for primality.-Calculate a number's unique prime factorization.-List every divisor of a number.-Generate a random prime, with the option to specify a range in which the prime is to be found.-Browse through a complete list of the first 10,000 primes.-Calculate pi(n), the prime counting function. This is the number of primes less than or equal to n.-Calculate the greatest common divisor (GCD) of two numbers.-Calculate the lowest common multiple (LCM) of two numbers.-Find the value of Euler's totient function, phi(n). This is the number of positive integers less than or equal to n that are coprime to n.
Most features allow testing of numbers up to 9,999,999,999,999,999 (10^16 -1).
This app is completely free and is not ad supported.
Category : Education
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Reviews (4)
A. G. u.
Nov 18, 2012
Exactly what I was searching for.. It can do anything related to primes. Good job.
A. G. u.
Aug 18, 2012
Very usefull
Sya. S.
Jul 1, 2013
What happened with the icon?
Very clean app, but I would also like a "largest prime less than" option to look at some neighbouring primes