Compare 42387 vs 42391
| Property | 42387 | 42391 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 711 × 1991 | 423911 |
| Prime factorization | 3 × 71 × 199 | 42391 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 71, 199, 213, 597, 14129, 42387 | 1, 42391 |
| Number of properties | 0 | 8 |
| Additive primes | 1979th | |
| Harmonic primes | 1648th | |
| Isolated primes | 3200th | |
| Lucky primes | 646th | |
| Primes | 4431st | |
| Sexy primes (1st member) | 1255th | |
| Sexy prime quadrupletss (1st member) | 48th | |
| Sexy prime triplets (1st member) | 305th | |
| Roman numberals | ||
| Base 2 | 10100101100100112 | 10100101100101112 |
| Base 3 | 20110102203 | 20110110013 |
| Base 4 | 221121034 | 221121134 |
| Base 5 | 23240225 | 23240315 |
| Base 6 | 5241236 | 5241316 |
| Base 7 | 2344027 | 2344067 |
| Base 8 | 1226238 | 1226278 |
| Base 9 | 641269 | 641319 |
| Base 10 | 4238710 | 4239110 |
| Base 11 | 2993411 | 2993811 |
| Base 12 | 2064312 | 2064712 |
| Base 13 | 163a713 | 163ab13 |
| Base 14 | 1163914 | 1163d14 |
| Base 15 | c85c15 | c86115 |
| Base 16 | a59316 | a59716 |