NAME

Math::NumSeq::MathImageObstinate -- obstinate numbers, odd integers not of the form prime+2^k

SYNOPSIS

use Math::NumSeq::MathImageObstinate;
my $seq = Math::NumSeq::MathImageObstinate->new;
my ($i, $value) = $seq->next;

DESCRIPTION

The obstinate numbers, being integers which cannot be represented as prime+2^k for some prime and some power-of-2.

1, 3, 127, 149, 251, ...

For example 149 is obstinate because none of 149-1, 149-2, 149-4, ... 149-128 are primes.

FUNCTIONS

$seq = Math::NumSeq::MathImageObstinate->new ()

$seq = Math::NumSeq::MathImageObstinate->new (obstinate_type => $str)

Create and return a new sequence object.

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

Return true if $value is an obstinate, deficient or primitive obstinate per $seq.

This check requires factorizing $value and in the current code a hard limit of 2**32 is placed on values to be checked.

SEE ALSO

Math::NumSeq