Compare 21401 vs 21991
| Property | 21401 | 21991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 214011 | 219911 |
| Prime factorization | 21401 | 21991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21401 | 1, 21991 |
| Number of properties | 6 | 5 |
| Chen primes | 1179th | 1208th |
| Cousin primes (2nd member) | 365th | |
| Isolated primes | 1678th | 1720th |
| Primes | 2403rd | 2463rd |
| Pythagorean primes | 1192nd | |
| Sexy primes (1st member) | 730th | 742nd |
| Sexy prime triplets (1st member) | 202nd | |
| Roman numberals | ||
| Base 2 | 1010011100110012 | 1010101111001112 |
| Base 3 | 10021001223 | 10100111113 |
| Base 4 | 110321214 | 111132134 |
| Base 5 | 11411015 | 12004315 |
| Base 6 | 2430256 | 2454516 |
| Base 7 | 1162527 | 1210547 |
| Base 8 | 516318 | 527478 |
| Base 9 | 323189 | 331449 |
| Base 10 | 2140110 | 2199110 |
| Base 11 | 1509611 | 1558211 |
| Base 12 | 1047512 | 1088712 |
| Base 13 | 998313 | a01813 |
| Base 14 | 7b2914 | 802b14 |
| Base 15 | 651b15 | 67b115 |
| Base 16 | 539916 | 55e716 |