Compare 990172 vs 990181
| Property | 990172 | 990181 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 22 × 731 × 33911 | 9901811 |
| Prime factorization | 2 × 2 × 73 × 3391 | 990181 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 4, 73, 146, 292, 3391, 6782, 13564, 247543, 495086, 990172 | 1, 990181 |
| Number of properties | 0 | 3 |
| Chen primes | 29707th | |
| Primes | 77789th | |
| Twin primes (2nd member) | 8103rd | |
| Roman numberals | ||
| Base 2 | 111100011011110111002 | 111100011011111001012 |
| Base 3 | 12120220210013 | 12120220211013 |
| Base 4 | 33012331304 | 33012332114 |
| Base 5 | 2231411425 | 2231412115 |
| Base 6 | 331200446 | 331201016 |
| Base 7 | 112625417 | 112625537 |
| Base 8 | 36157348 | 36157458 |
| Base 9 | 17682319 | 17682419 |
| Base 10 | 99017210 | 99018110 |
| Base 11 | 616a2711 | 616a3511 |
| Base 12 | 3b902412 | 3b903112 |
| Base 13 | 28890113 | 28890a13 |
| Base 14 | 1babc814 | 1babd314 |
| Base 15 | 1485b715 | 1485c115 |
| Base 16 | f1bdc16 | f1be516 |