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factor, primes \- factor a number, generate large primes
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and its prime factors,
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each repeated the proper number of times.
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The number must be positive and less than
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.if t 1.8\(mu10\u\s716\s0\d\|).
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reads a stream of numbers from the standard input and factors them.
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It exits on any input not a positive integer.
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Maximum running time is proportional to
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.if t .I \(sr\o'n\(rn'\f1.
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prints the prime numbers ranging from
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are positive numbers less than
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is missing, it reads the starting number from the
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.B \*9/src/cmd/factor.c
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.B \*9/src/cmd/primes.c