Compare 990131 vs 990155
| Property | 990131 | 990155 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 171 × 582431 | 51 × 1980311 |
| Prime factorization | 17 × 58243 | 5 × 198031 |
| Divisors count | 4 | 4 |
| Divisors | 1, 17, 58243, 990131 | 1, 5, 198031, 990155 |
| Number of properties | 1 | 1 |
| Semiprimes | 208060th | 208067th |
| Roman numberals | ||
| Base 2 | 111100011011101100112 | 111100011011110010112 |
| Base 3 | 12120220121123 | 12120220201023 |
| Base 4 | 33012323034 | 33012330234 |
| Base 5 | 2231410115 | 2231411105 |
| Base 6 | 331155356 | 331200156 |
| Base 7 | 112624527 | 112625157 |
| Base 8 | 36156638 | 36157138 |
| Base 9 | 17681759 | 17682129 |
| Base 10 | 99013110 | 99015510 |
| Base 11 | 61699a11 | 616a1111 |
| Base 12 | 3b8bab12 | 3b900b12 |
| Base 13 | 28889c13 | 2888ba13 |
| Base 14 | 1bab9914 | 1babb514 |
| Base 15 | 14858b15 | 1485a515 |
| Base 16 | f1bb316 | f1bcb16 |