Centix

Centix is equal to -1 = 9,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999. The term was coined by André Joyce.Googology 
Its prime factorization is 32 × 11 × 41 × 101 × 251 × 271 × 3,541 × 5,051 × 9,091 × 21,401 × 25,601 × 27,961 × 60,101 × 7,019,801 × 182,521,213,001 × 14,103,673,319,201 × 78,875,943,472,201 × 1,680,588,011,350,901.
This number is one less than a googol.
== Etymology ==
The 2 parts of the name, “cent” and “ix”, mean 100 and 9, respectively.
== Sources ==
Category:Numbers
Category:Class 2
Category:Numbers by André Joyce
Category:Numbers with 30 to 100 digits
Category:Odd numbers
Category:Repdigit numbers
Category:Roman numeral-based name