Vigintiv

The vigintiv is equal to 44,444,444,444,444,444,444. The term was coined by André Joyce.https://michaelhalm.tripod.com/mathematics_beyond_the_googol.html
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 ==
Category:Numbers
Category:Class 2
Category:Even numbers
Category:Numbers by André Joyce
Category:Numbers with 7 to 29 digits
Category:Repdigit numbers
Category:Roman numeral-based name