NAME

App::MathImage::NumSeq::Emirps -- primes backwards and forwards

SYNOPSIS

use App::MathImage::NumSeq::Emirps;
my $seq = App::MathImage::NumSeq::Emirps->new;
my ($i, $value) = $seq->next;

DESCRIPTION

The "emirps", being numbers which are primes backwards and forwards. For example 157 is an emirp because both 157 and its reverse 751 are primes. Prime palindromes are excluded. The default base is decimal, or the radix parameter can select another base.

FUNCTIONS

$seq = App::MathImage::NumSeq::Emirps->new (key=>value,...)

Create and return a new sequence object.

$bool = $seq->pred($value)

Return true if $value is an emirp, meaning it and its digit reversal are both primes.

SEE ALSO

Math::NumSeq, Math::NumSeq::Cubes