Math::N...:Emirps(3)

💖 Math::NumSeq::Emirps 💖

okay bestie, so this page is Math::NumSeq::Emirps from the User Contributed Perl Documentation, and it's literally about primes that go both ways 🦋

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✨ NAME ✨

Math::NumSeq::Emirps — primes backwards and forwards, no cap 💅

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🌸 SYNOPSIS 🌸

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

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🎀 DESCRIPTION 🎀

so the "emirps" are numbers which are primes backwards and forwards. like, both directions ate. 💖

for example 157 is an emirp because both 157 and its reverse 751 are primes. the way it just flips and stays iconic?? 😭✨

not me forgetting to mention: prime palindromes are excluded. so no "reads the same both ways" main characters allowed in this club, sorry 🚫👑

the default base is decimal, or you can use the radix parameter to select another base. choose your own adventure fr fr 🌈

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💅 FUNCTIONS 💅

go check out "FUNCTIONS" in Math::NumSeq for the behaviour that's common to all sequence classes, bestie 🫶

• $seq = Math::NumSeq::Emirps->new ()
• $seq = Math::NumSeq::Emirps->new (radix => 16) — create and return a new sequence object ✨ (yes that second one is giving hex energy, iykyk)
• $bool = $seq->pred($value) — return true if $value is an emirp, meaning it and its digit reversal (in the radix) are both primes. two primes or it's not happening, periodt 💅

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👀 SEE ALSO 👀

• Math::NumSeq
• Math::NumSeq::Primes

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🌈 HOME PAGE 🌈

<http://user42.tuxfamily.org/math-numseq/index.html>

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⭐ LICENSE ⭐

Copyright 2010, 2011, 2012, 2013, 2014, 2016, 2019, 2020 Kevin Ryde

Math-NumSeq 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.

Math-NumSeq 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 Math-NumSeq. If not, see <http://www.gnu.org/licenses/>.

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perl v5.42.0 · 2025-07-25 — and that's the whole vibe check for Math::NumSeq::Emirps, bestie. go make some numbers that slay in both directions 💖✨🦋🎀🫶