NAME
Math::NumSeq::DigitProduct  product of digits
SYNOPSIS
use Math::NumSeq::DigitProduct;
my $seq = Math::NumSeq::DigitProduct>new (radix => 10);
my ($i, $value) = $seq>next;
DESCRIPTION
The products of the digits of i, for example at i=456 the value is 4*5*6=120. i=0 is treated as a single digit 0, so it's product is 0.
For binary (radix => 2
) the digits are all just 0 or 1 which means the product is 1 for numbers 0b1, 0b11, 0b111, etc, 2**k1, or 0 otherwise.
FUNCTIONS
See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence classes.
$seq = Math::NumSeq::DigitProduct>new ()
$seq = Math::NumSeq::DigitProduct>new (radix => $r)

Create and return a new sequence object. The default radix is 10, ie. decimal, or a
radix
parameter can be given.
Random Access
$value = $seq>ith($i)

Return the product of the digits of
$i
. $bool = $seq>pred($value)

Return true if
$value
is the product of some set of digits. This means its factors (prime factors) are all less than the radix, since nothing bigger can occur.
SEE ALSO
Math::NumSeq, Math::NumSeq::DigitLength, Math::NumSeq::DigitSum
HOME PAGE
http://user42.tuxfamily.org/mathnumseq/index.html
LICENSE
Copyright 2011, 2012, 2013, 2014, 2016, 2019 Kevin Ryde
MathNumSeq is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.
MathNumSeq 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with MathNumSeq. If not, see <http://www.gnu.org/licenses/>.