Compare 991 vs 1002
| Property | 991 | 1002 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 9911 | 21 × 31 × 1671 |
| Prime factorization | 991 | 2 × 3 × 167 |
| Divisors count | 2 | 8 |
| Divisors | 1, 991 | 1, 2, 3, 6, 167, 334, 501, 1002 |
| Number of properties | 10 | 0 |
| Additive primes | 89th | |
| Chen primes | 115th | |
| Emirps | 36th | |
| Isolated primes | 98th | |
| Lucky primes | 42nd | |
| Primes | 167th | |
| Sexy primes (1st member) | 74th | |
| Solinas primes | 43rd | |
| Super primes | 39th | |
| Ulam primes | 18th | |
| Roman numberals | CMXCI | MII |
| Base 2 | 11110111112 | 11111010102 |
| Base 3 | 11002013 | 11010103 |
| Base 4 | 331334 | 332224 |
| Base 5 | 124315 | 130025 |
| Base 6 | 43316 | 43506 |
| Base 7 | 26147 | 26317 |
| Base 8 | 17378 | 17528 |
| Base 9 | 13219 | 13339 |
| Base 10 | 99110 | 100210 |
| Base 11 | 82111 | 83111 |
| Base 12 | 6a712 | 6b612 |
| Base 13 | 5b313 | 5c113 |
| Base 14 | 50b14 | 51814 |
| Base 15 | 46115 | 46c15 |
| Base 16 | 3df16 | 3ea16 |