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 a tendency for the prime numbers to occur on diagonal lines, however far out into the spiral one goes.
This is software is for exploring the Prime Number Spiral.
It also
(a) allows coloring of the prime numbers in various ways,
(b) displays a random arrangement to compare with the primes and
(c) shows how square and triangular numbers are located on the spiral.
Prime Number Spiral 8.59 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...
Factorizer 8.6
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
Prime or not ! 5.
Prime Or Not ! is a complete cellection of tools for primality testing/factorization.
Using PON! you can test the primality of numbers up to E200.
PON! also performs tests on Mersenne's numbers...
Prime Derivatives 1.
This attractive, handy little prime number calculator takes any number up to twenty digits, and then factorizes all the unique prime numbers that evenly divide into the number that was entered into the field.
It's small enough to neatly fit in the corner of your monitor while you easily factorize the numbers you need for that...
CFB Primes 2.0 CFB Primes is an optimised PalmOS program which can find the prime factors and closest primes of any integer number up to one billion (US) in a few seconds or less
Factorizer 11.09 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...
MatheHP 2.46 Program MatheHP contains calculators for integer, rational, real and complex numbers with high precision (up to 144 digits with point numbers, 616 with integer numbers)
Do-download.com do not supply any crack, patches,torrent, password, serial numbers, registration codes, key generators, cd key, hacks or keygen for the software,and please consult directly with program authors (Hermetic Systems) if you have any problem with the software.