Compare 990991 vs 991013
| Property | 990991 | 991013 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 4431 × 22371 | 1511 × 65631 |
| Prime factorization | 443 × 2237 | 151 × 6563 |
| Divisors count | 4 | 4 |
| Divisors | 1, 443, 2237, 990991 | 1, 151, 6563, 991013 |
| Number of properties | 1 | 1 |
| Semiprimes | 208236th | 208240th |
| Roman numberals | ||
| Base 2 | 111100011111000011112 | 111100011111001001012 |
| Base 3 | 12121001011013 | 12121001020123 |
| Base 4 | 33013300334 | 33013302114 |
| Base 5 | 2232024315 | 2232030235 |
| Base 6 | 331235316 | 331240056 |
| Base 7 | 112651217 | 112651527 |
| Base 8 | 36174178 | 36174458 |
| Base 9 | 17703419 | 17703659 |
| Base 10 | 99099110 | 99101310 |
| Base 11 | 61760111 | 61762111 |
| Base 12 | 3b95a712 | 3b960512 |
| Base 13 | 2890b113 | 2890ca13 |
| Base 14 | 1bb21114 | 1bb22914 |
| Base 15 | 14896115 | 14897815 |
| Base 16 | f1f0f16 | f1f2516 |