Compare 81439 vs 81447
| Property | 81439 | 81447 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 814391 | 31 × 171 × 15971 |
| Prime factorization | 81439 | 3 × 17 × 1597 |
| Divisors count | 2 | 8 |
| Divisors | 1, 81439 | 1, 3, 17, 51, 1597, 4791, 27149, 81447 |
| Number of properties | 5 | 0 |
| Harmonic primes | 3009th | |
| Isolated primes | 5917th | |
| Lucky primes | 1074th | |
| Primes | 7968th | |
| Ulam primes | 581st | |
| Roman numberals | ||
| Base 2 | 100111110000111112 | 100111110001001112 |
| Base 3 | 110102010213 | 110102011203 |
| Base 4 | 1033201334 | 1033202134 |
| Base 5 | 101012245 | 101012425 |
| Base 6 | 14250116 | 14250236 |
| Base 7 | 4563017 | 4563127 |
| Base 8 | 2370378 | 2370478 |
| Base 9 | 1336379 | 1336469 |
| Base 10 | 8143910 | 8144710 |
| Base 11 | 5620611 | 5621311 |
| Base 12 | 3b16712 | 3b17312 |
| Base 13 | 2b0b713 | 2b0c213 |
| Base 14 | 2197114 | 2197914 |
| Base 15 | 191e415 | 191ec15 |
| Base 16 | 13e1f16 | 13e2716 |