Compare 215891 vs 215893
| Property | 215891 | 215893 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 131 × 166071 | 2158931 |
| Prime factorization | 13 × 16607 | 215893 |
| Divisors count | 4 | 2 |
| Divisors | 1, 13, 16607, 215891 | 1, 215893 |
| Number of properties | 1 | 6 |
| Harmonic primes | 7227th | |
| Isolated primes | 14697th | |
| Lucky primes | 2466th | |
| Primes | 19278th | |
| Pythagorean primes | 9618th | |
| Semiprimes | 48651st | |
| Sexy primes (1st member) | 4563rd | |
| Roman numberals | ||
| Base 2 | 1101001011010100112 | 1101001011010101012 |
| Base 3 | 1012220102223 | 1012220110013 |
| Base 4 | 3102311034 | 3102311114 |
| Base 5 | 234020315 | 234020335 |
| Base 6 | 43432556 | 43433016 |
| Base 7 | 15562647 | 15562667 |
| Base 8 | 6455238 | 6455258 |
| Base 9 | 3581289 | 3581319 |
| Base 10 | 21589110 | 21589310 |
| Base 11 | 13822511 | 13822711 |
| Base 12 | a4b2b12 | a4b3112 |
| Base 13 | 7736013 | 7736213 |
| Base 14 | 5896b14 | 5896d14 |
| Base 15 | 43e7b15 | 43e7d15 |
| Base 16 | 34b5316 | 34b5516 |