Compare 990121 vs 990159
| Property | 990121 | 990159 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 900111 | 31 × 3300531 |
| Prime factorization | 11 × 90011 | 3 × 330053 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 90011, 990121 | 1, 3, 330053, 990159 |
| Number of properties | 1 | 1 |
| Semiprimes | 208057th | 208068th |
| Roman numberals | ||
| Base 2 | 111100011011101010012 | 111100011011110011112 |
| Base 3 | 12120220120113 | 12120220201203 |
| Base 4 | 33012322214 | 33012330334 |
| Base 5 | 2231404415 | 2231411145 |
| Base 6 | 331155216 | 331200236 |
| Base 7 | 112624367 | 112625227 |
| Base 8 | 36156518 | 36157178 |
| Base 9 | 17681649 | 17682169 |
| Base 10 | 99012110 | 99015910 |
| Base 11 | 61699011 | 616a1511 |
| Base 12 | 3b8ba112 | 3b901312 |
| Base 13 | 28889213 | 2888c113 |
| Base 14 | 1bab8d14 | 1babb914 |
| Base 15 | 14858115 | 1485a915 |
| Base 16 | f1ba916 | f1bcf16 |