Compare 30990 vs 30991
| Property | 30990 | 30991 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 4 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 21 × 31 × 51 × 10331 | 171 × 18231 |
| Prime factorization | 2 × 3 × 5 × 1033 | 17 × 1823 |
| Divisors count | 16 | 4 |
| Divisors | 1, 2, 3, 5, 6, 10, 15, 30, 1033, 2066, 3099, 5165, 6198, 10330, 15495, 30990 | 1, 17, 1823, 30991 |
| Number of properties | 0 | 1 |
| Semiprimes | 7701st | |
| Roman numberals | ||
| Base 2 | 1111001000011102 | 1111001000011112 |
| Base 3 | 11201112103 | 11201112113 |
| Base 4 | 132100324 | 132100334 |
| Base 5 | 14424305 | 14424315 |
| Base 6 | 3552506 | 3552516 |
| Base 7 | 1562317 | 1562327 |
| Base 8 | 744168 | 744178 |
| Base 9 | 464539 | 464549 |
| Base 10 | 3099010 | 3099110 |
| Base 11 | 2131311 | 2131411 |
| Base 12 | 15b2612 | 15b2712 |
| Base 13 | 1114b13 | 1114c13 |
| Base 14 | b41814 | b41914 |
| Base 15 | 92b015 | 92b115 |
| Base 16 | 790e16 | 790f16 |