Compare 3980 vs 3991
| Property | 3980 | 3991 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 51 × 1991 | 131 × 3071 |
| Prime factorization | 2 × 2 × 5 × 199 | 13 × 307 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980 | 1, 13, 307, 3991 |
| Number of properties | 0 | 1 |
| Semiprimes | 1102nd | |
| Roman numberals | MMMCMLXXX | MMMCMXCI |
| Base 2 | 1111100011002 | 1111100101112 |
| Base 3 | 121101023 | 121102113 |
| Base 4 | 3320304 | 3321134 |
| Base 5 | 1114105 | 1114315 |
| Base 6 | 302326 | 302516 |
| Base 7 | 144147 | 144317 |
| Base 8 | 76148 | 76278 |
| Base 9 | 54129 | 54249 |
| Base 10 | 398010 | 399110 |
| Base 11 | 2a9911 | 2aa911 |
| Base 12 | 237812 | 238712 |
| Base 13 | 1a7213 | 1a8013 |
| Base 14 | 164414 | 165114 |
| Base 15 | 12a515 | 12b115 |
| Base 16 | f8c16 | f9716 |