vampire numbers

A form of vampire number — 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

noun
  1. pluralplural of vampire number
Cite this entry
APA

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

MLA

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

Chicago

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

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