Compare 990991 vs 991002
| Property | 990991 | 991002 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 4 |
| Total factors | 2 | 4 |
| Prime factorization | 4431 × 22371 | 21 × 31 × 191 × 86931 |
| Prime factorization | 443 × 2237 | 2 × 3 × 19 × 8693 |
| Divisors count | 4 | 16 |
| Divisors | 1, 443, 2237, 990991 | 1, 2, 3, 6, 19, 38, 57, 114, 8693, 17386, 26079, 52158, 165167, 330334, 495501, 991002 |
| Number of properties | 1 | 0 |
| Semiprimes | 208236th | |
| Roman numberals | ||
| Base 2 | 111100011111000011112 | 111100011111000110102 |
| Base 3 | 12121001011013 | 12121001012103 |
| Base 4 | 33013300334 | 33013301224 |
| Base 5 | 2232024315 | 2232030025 |
| Base 6 | 331235316 | 331235506 |
| Base 7 | 112651217 | 112651357 |
| Base 8 | 36174178 | 36174328 |
| Base 9 | 17703419 | 17703539 |
| Base 10 | 99099110 | 99100210 |
| Base 11 | 61760111 | 61761111 |
| Base 12 | 3b95a712 | 3b95b612 |
| Base 13 | 2890b113 | 2890bc13 |
| Base 14 | 1bb21114 | 1bb21c14 |
| Base 15 | 14896115 | 14896c15 |
| Base 16 | f1f0f16 | f1f1a16 |