vampire number

noun

A composite natural number with an even number of digits that can be factored into two natural numbers (called "fangs") each with half as many digits as the original number, and where the two factors contain precisely all the digits of the original number, in any order, counting multiplicity.

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Meanings

nounvampire number (plural vampire numbers)

plural vampire numbers

  1. mathematicsA composite natural number with an even number of digits that can be factored into two natural numbers (called "fangs") each with half as many digits as the original number, and where the two factors contain precisely all the digits of the original number, in any order, counting multiplicity.

Translations

Polish liczba wampirza
  • liczba wampirzanumber
Cite this entry
APA

vampire number. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/vampire%20number

MLA

“vampire number.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/vampire%20number. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “vampire number,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/vampire%20number.

Source: vampire number on Wiktionary, CC BY-SA 4.0.