Compare 81428 vs 81439
| Property | 81428 | 81439 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 22 × 203571 | 814391 |
| Prime factorization | 2 × 2 × 20357 | 81439 |
| Divisors count | 6 | 2 |
| Divisors | 1, 2, 4, 20357, 40714, 81428 | 1, 81439 |
| Number of properties | 0 | 5 |
| Harmonic primes | 3009th | |
| Isolated primes | 5917th | |
| Lucky primes | 1074th | |
| Primes | 7968th | |
| Ulam primes | 581st | |
| Roman numberals | ||
| Base 2 | 100111110000101002 | 100111110000111112 |
| Base 3 | 110102002123 | 110102010213 |
| Base 4 | 1033201104 | 1033201334 |
| Base 5 | 101012035 | 101012245 |
| Base 6 | 14245526 | 14250116 |
| Base 7 | 4562547 | 4563017 |
| Base 8 | 2370248 | 2370378 |
| Base 9 | 1336259 | 1336379 |
| Base 10 | 8142810 | 8143910 |
| Base 11 | 561a611 | 5620611 |
| Base 12 | 3b15812 | 3b16712 |
| Base 13 | 2b0a913 | 2b0b713 |
| Base 14 | 2196414 | 2197114 |
| Base 15 | 191d815 | 191e415 |
| Base 16 | 13e1416 | 13e1f16 |