Compare 3987 vs 3991
| Property | 3987 | 3991 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 32 × 4431 | 131 × 3071 |
| Prime factorization | 3 × 3 × 443 | 13 × 307 |
| Divisors count | 6 | 4 |
| Divisors | 1, 3, 9, 443, 1329, 3987 | 1, 13, 307, 3991 |
| Number of properties | 0 | 1 |
| Semiprimes | 1102nd | |
| Roman numberals | MMMCMLXXXVII | MMMCMXCI |
| Base 2 | 1111100100112 | 1111100101112 |
| Base 3 | 121102003 | 121102113 |
| Base 4 | 3321034 | 3321134 |
| Base 5 | 1114225 | 1114315 |
| Base 6 | 302436 | 302516 |
| Base 7 | 144247 | 144317 |
| Base 8 | 76238 | 76278 |
| Base 9 | 54209 | 54249 |
| Base 10 | 398710 | 399110 |
| Base 11 | 2aa511 | 2aa911 |
| Base 12 | 238312 | 238712 |
| Base 13 | 1a7913 | 1a8013 |
| Base 14 | 164b14 | 165114 |
| Base 15 | 12ac15 | 12b115 |
| Base 16 | f9316 | f9716 |