| Education
/ Mathematics
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| Prime Number Spiral 7.57 |
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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.
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| Prime Number Spiral related software |
| Title / Version / Description |
Size |
License |
Price |
| Primes 1.4 | 249.0 KB | Freeware | |  calculates the prime numbers 1..N, tells you if N is prime etc.
Prints tables of primes.
Computes the prime just below or above N.
It is useful in computing optimal Hashtable sizes.
Java source included. |
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| Factorizer 9.57 | 1.4 MB | Shareware | $16 |  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 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... |
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| MatheHP 2.41 | 734.8 KB | Shareware | 10EUR |  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). You can also solve algebraic equations with up to 8 th degree and linear systems of equations. For the quick computation of prime numbers a prime number generator is available. Moreover prime factors and divisors can be calculated. |
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| Prime Option 2.2.1 | 318.4 KB | Shareware | $195 |  Prime Option is used to measure what is important and to select the best option.
It can be used to choose products, software, development options, shares, funds, staff, features and design points.
It can also be used to measure judgments, importance, risk, compliance, governance and requirements fit.
Prime Option is a Multi Criteria Decision Analysis (MCDA) tool which can be used to improve the decision making process. For over thirty... |
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| Hpmbcalc Hex Calculator 4.1 | 1.6 MB | Shareware | $29.95 |  This is a programmable multiple-precision hex calculator with many utilities for you to perform a lot of big number math operations. Key Features:
1. Standard hex calculator: basic math operations; Hex/Dec/Oct/Bin conversion; byte/operand swap; square root, Jacobi symbol calculation.
2. Scripting host and automation: VBScript / JScript support; big number operation methods.
3. Hash/CRC/checksum calculator: MD2, MD4, MD5, SHA, RIPEMD hash... |
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| 3D SurfTris 1.0 | 7.9 MB | Shareware | $19.95 |  SurfTris is a Tetris clone with a new twist. Instead of 2D plane, playing field is spread upon a 3D surface. There are five different surfaces to choose from: three closed surfaces - Cylinder, Cone, and Hyperboloid and two twisted planes - C-Spiral and O-Spiral.
Game features:
1. Simple controls and easy to learn game play.
2. Non-violent game the entire family can participate.
3. Five different surfaces with unique challenges.
4.... |
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| MITCalc - Torsion Springs 1.14 | 3.1 MB | Shareware | $19 |  The calculation is intended for the purposes of geometric and strength designs of spiral cylindrical torsion springs made of wires and rods in circular sections, cold formed, loaded with a static or cyclic loading. Application is developed in MS Excel, is multi-language and supports Imperial and Metric units and solves the following main tasks: - Automatic design of the spring. - Selection of the optimal design of the spring with respect to... |
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| Prophera 2.5 | 985.6 KB | Shareware | $18 |  Pythagoras and other philosophers of the time believed that because mathematical concepts were more practical than physical ones, they had greater actuality. And what is file? It is only... set of numbers! |
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| HIME: Huge Integer Math and Encryption 2.00 | 878.9 KB | Shareware | $59 |  HIME stands for Huge Integer Math and Encryption library.
It is a collection of functions for Windows programmers that allows to implement RSA public key encryption (In 'classic' mode and in CRT Chinese Remainder Theorem mode), AES (Rijndael, 3 block cipher modes) and ArcFour (RC4) secret key encryption and digital signatures using the SHA-1, SHA-256, SHA-512 or MD5 Secure Hash Algorithm in your programs.
It also has functions for data... |
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