NAME
    pfact - product of primes up to specified integer

SYNOPSIS
    pfact(n)

TYPES
    n		nonnegative integer

    return	positive integer

DESCRIPTION
    Returns the product of primes p_i for which p_i <= n.

EXAMPLE
    ; for (i = 0; i <= 16; i++) print pfact(i),:;
    1 1 2 6 6 30 30 210 210 210 210 2310 2310 30030 30030 30030 30030

LIMITS
    n < 2^24

LINK LIBRARY
    NUMBER *qpfact(NUMBER *n)
    void zpfact(ZVALUE z, ZVALUE *dest)

SEE ALSO
    factor, isprime, lfactor, nextcand, nextprime, prevcand, prevprime,
    pix, ptest, fact, lcmfact

## Copyright (C) 1999-2006  Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL.  You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
##
## @(#) $Revision: 29.4 $
## @(#) $Id: pfact,v 29.4 2006/06/25 22:16:55 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/pfact,v $
##
## Under source code control:	1995/12/18 12:34:57
## File existed as early as:	1995
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/
