The vigintiv is equal to 44,444,444,444,444,444,444. The term was coined by André Joyce.[1]

Its prime factorization is 22 × 11 × 41 × 101 × 271 × 3,541 × 9,091 × 27,961.

Etymology

The 2 parts of the name, “vigint” and “iv”, mean 20 and 4, respectively.

Sources

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