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This is a small object illustrating numerical programming in the Python language. Module defines a class Prime. The purpose of a Prime object is to work with prime numbers---to test numbers for primality, and to find the set of prime factors in a given number.

We could just provide simple functions for primality testing and factoring. However, the process of testing a number for primes involves generating primes. For efficiency's sake, we provide an object that remembers all the primes it has already generated, rather than discarding them.

This object was written and verified using the Cleanroom software development methodology. See the author's Cleanroom page for more information.

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See also: Examples of applications written in Python
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John Shipman,
Last updated: 2004/03/07 01:42:51 UT
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