Compare 21991 vs 22013
| Property | 21991 | 22013 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 219911 | 220131 |
| Prime factorization | 21991 | 22013 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21991 | 1, 22013 |
| Number of properties | 5 | 4 |
| Chen primes | 1208th | |
| Isolated primes | 1720th | 1723rd |
| Primes | 2463rd | 2466th |
| Pythagorean primes | 1224th | |
| Sexy primes (1st member) | 742nd | |
| Sexy prime triplets (1st member) | 202nd | |
| Sophie germain primes | 355th | |
| Roman numberals | ||
| Base 2 | 1010101111001112 | 1010101111111012 |
| Base 3 | 10100111113 | 10100120223 |
| Base 4 | 111132134 | 111133314 |
| Base 5 | 12004315 | 12010235 |
| Base 6 | 2454516 | 2455256 |
| Base 7 | 1210547 | 1211157 |
| Base 8 | 527478 | 527758 |
| Base 9 | 331449 | 331689 |
| Base 10 | 2199110 | 2201310 |
| Base 11 | 1558211 | 155a211 |
| Base 12 | 1088712 | 108a512 |
| Base 13 | a01813 | a03413 |
| Base 14 | 802b14 | 804514 |
| Base 15 | 67b115 | 67c815 |
| Base 16 | 55e716 | 55fd16 |