Compare 990142 vs 990161
| Property | 990142 | 990161 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 4950711 | 431 × 230271 |
| Prime factorization | 2 × 495071 | 43 × 23027 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 495071, 990142 | 1, 43, 23027, 990161 |
| Number of properties | 1 | 1 |
| Semiprimes | 208065th | 208069th |
| Roman numberals | ||
| Base 2 | 111100011011101111102 | 111100011011110100012 |
| Base 3 | 12120220122213 | 12120220201223 |
| Base 4 | 33012323324 | 33012331014 |
| Base 5 | 2231410325 | 2231411215 |
| Base 6 | 331155546 | 331200256 |
| Base 7 | 112624667 | 112625247 |
| Base 8 | 36156768 | 36157218 |
| Base 9 | 17681879 | 17682189 |
| Base 10 | 99014210 | 99016110 |
| Base 11 | 6169aa11 | 616a1711 |
| Base 12 | 3b8bba12 | 3b901512 |
| Base 13 | 2888aa13 | 2888c313 |
| Base 14 | 1baba614 | 1babbb14 |
| Base 15 | 14859715 | 1485ab15 |
| Base 16 | f1bbe16 | f1bd116 |