noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A product of factorials, such that the superfactorial of a number n is 1! × 2! × 3! × ... × n!.

Etymology

Coined by Neil Sloane and Simon Plouffe in 1995, from super- + factorial.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.