Prime Number Spiral 6.79
Software for exploring the Prime Number Spiral (a.k.a. the Ulam Spiral) The Prime Number Spiral (a.k.a. the Ulam Spiral) is constructed as follows: Consider a rectangular grid. We start with the central point and arrange the positive integers in a spiral fashion (anticlockwise). The prime numbers are then marked. There is ...
Factorizer 8.89
For factoring integers, finding primes and plotting associated histograms Factorizer is a Windows program to find factors of numbers up to 2,147,483,646 and to find primes, pairs of primes and Palmen colors of numbers. Or in more detail, Factorizer may be used: (1) to get the prime decomposition of all numbers in a range ...
