Compare 81399 vs 81409
| Property | 81399 | 81409 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 431 × 6311 | 814091 |
| Prime factorization | 3 × 43 × 631 | 81409 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 43, 129, 631, 1893, 27133, 81399 | 1, 81409 |
| Number of properties | 0 | 5 |
| Harmonic primes | 3007th | |
| Isolated primes | 5915th | |
| Primes | 7966th | |
| Proth primes | 92nd | |
| Pythagorean primes | 3969th | |
| Roman numberals | ||
| Base 2 | 100111101111101112 | 100111110000000012 |
| Base 3 | 110101222103 | 110102000113 |
| Base 4 | 1033133134 | 1033200014 |
| Base 5 | 101010445 | 101011145 |
| Base 6 | 14245036 | 14245216 |
| Base 7 | 4562137 | 4562267 |
| Base 8 | 2367678 | 2370018 |
| Base 9 | 1335839 | 1336049 |
| Base 10 | 8139910 | 8140910 |
| Base 11 | 5617a11 | 5618911 |
| Base 12 | 3b13312 | 3b14112 |
| Base 13 | 2b08613 | 2b09313 |
| Base 14 | 2194314 | 2194d14 |
| Base 15 | 191b915 | 191c415 |
| Base 16 | 13df716 | 13e0116 |