Compare 3981 vs 3990
| Property | 3981 | 3990 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 5 |
| Total factors | 2 | 5 |
| Prime factorization | 31 × 13271 | 21 × 31 × 51 × 71 × 191 |
| Prime factorization | 3 × 1327 | 2 × 3 × 5 × 7 × 19 |
| Divisors count | 4 | 32 |
| Divisors | 1, 3, 1327, 3981 | 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 |
| Number of properties | 1 | 0 |
| Semiprimes | 1098th | |
| Roman numberals | MMMCMLXXXI | MMMCMXC |
| Base 2 | 1111100011012 | 1111100101102 |
| Base 3 | 121101103 | 121102103 |
| Base 4 | 3320314 | 3321124 |
| Base 5 | 1114115 | 1114305 |
| Base 6 | 302336 | 302506 |
| Base 7 | 144157 | 144307 |
| Base 8 | 76158 | 76268 |
| Base 9 | 54139 | 54239 |
| Base 10 | 398110 | 399010 |
| Base 11 | 2a9a11 | 2aa811 |
| Base 12 | 237912 | 238612 |
| Base 13 | 1a7313 | 1a7c13 |
| Base 14 | 164514 | 165014 |
| Base 15 | 12a615 | 12b015 |
| Base 16 | f8d16 | f9616 |