Duquadrixvigintiv

The duquadrixvigintiv is equal to 999,944,444,444,444,444,444,444,999,944,444,444,444,444,444,444. The term was coined by André Joyce.

Its prime factorization is 22 × 11 × 17 × 101 × 2,729 × 5,882,353 × 9,999,999,900,000,001 × 82,451,447,783,107,369.

Etymology
The prefix “du” means 2 repetitions of the decimal expansion, and is applied to quadrixvigintiv.