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28 lines
473 B
Plaintext
28 lines
473 B
Plaintext
NAME
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pfact - product of primes up to specified integer
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SYNOPSIS
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pfact(n)
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TYPES
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n nonnegative integer
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return positive integer
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DESCRIPTION
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Returns the product of primes p_i for which p_i <= n.
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EXAMPLE
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> for (i = 0; i <= 16; i++) print pfact(i),:;
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1 1 2 6 6 30 30 210 210 210 210 2310 2310 30030 30030 30030 30030
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LIMITS
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n < 2^24
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LIBRARY
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NUMBER *qpfact(NUMBER *n)
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void zpfact(ZVALUE z, ZVALUE *dest)
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SEE ALSO
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fact, lcmfact
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