For encryption and decryption of email messages, optionally with attached files up to 100 KB in entirely. Keys are maintained in an encrypted list of keys for easily access and repeated usance. Program is bilingual: English / German.
Misc - Prime Number Spiral 7.91 By Hermetic Systems
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The Prime Number Spiral (a.k.a. the Ulam Spiral) is constructed as follows: Consider a rectangular grid. We beginning with the central head and do the plus integers in a whorl fashion (anticlockwise). The prime numbers are then marked. There is a inclination for the prime numbers to occur on stroke lines, still far out into the whorl 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 squarely and triangular numbers are located on the whorl. |
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