Compare 42390 vs 42391
| Property | 42390 | 42391 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 21 × 33 × 51 × 1571 | 423911 |
| Prime factorization | 2 × 3 × 3 × 3 × 5 × 157 | 42391 |
| Divisors count | 32 | 2 |
| Divisors | 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 157, 270, 314, 471, 785, 942, 1413, 1570, 2355, 2826, 4239, 4710, 7065, 8478, 14130, 21195, 42390 | 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 | 10100101100101102 | 10100101100101112 |
| Base 3 | 20110110003 | 20110110013 |
| Base 4 | 221121124 | 221121134 |
| Base 5 | 23240305 | 23240315 |
| Base 6 | 5241306 | 5241316 |
| Base 7 | 2344057 | 2344067 |
| Base 8 | 1226268 | 1226278 |
| Base 9 | 641309 | 641319 |
| Base 10 | 4239010 | 4239110 |
| Base 11 | 2993711 | 2993811 |
| Base 12 | 2064612 | 2064712 |
| Base 13 | 163aa13 | 163ab13 |
| Base 14 | 1163c14 | 1163d14 |
| Base 15 | c86015 | c86115 |
| Base 16 | a59616 | a59716 |