Compare 3990 vs 3998
| Property | 3990 | 3998 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 5 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 21 × 31 × 51 × 71 × 191 | 21 × 19991 |
| Prime factorization | 2 × 3 × 5 × 7 × 19 | 2 × 1999 |
| Divisors count | 32 | 4 |
| Divisors | 1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990 | 1, 2, 1999, 3998 |
| Number of properties | 0 | 1 |
| Semiprimes | 1105th | |
| Roman numberals | MMMCMXC | MMMCMXCVIII |
| Base 2 | 1111100101102 | 1111100111102 |
| Base 3 | 121102103 | 121110023 |
| Base 4 | 3321124 | 3321324 |
| Base 5 | 1114305 | 1114435 |
| Base 6 | 302506 | 303026 |
| Base 7 | 144307 | 144417 |
| Base 8 | 76268 | 76368 |
| Base 9 | 54239 | 54329 |
| Base 10 | 399010 | 399810 |
| Base 11 | 2aa811 | 300511 |
| Base 12 | 238612 | 239212 |
| Base 13 | 1a7c13 | 1a8713 |
| Base 14 | 165014 | 165814 |
| Base 15 | 12b015 | 12b815 |
| Base 16 | f9616 | f9e16 |