Compare 21977 vs 21997
| Property | 21977 | 21997 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 219771 | 219971 |
| Prime factorization | 21977 | 21997 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21977 | 1, 21997 |
| Number of properties | 6 | 8 |
| Chen primes | 1207th | 1209th |
| Harmonic primes | 906th | |
| Isolated primes | 1719th | 1721st |
| Left-truncatable primes | 173rd | |
| Long primes | 931st | |
| Primes | 2462nd | 2464th |
| Pythagorean primes | 1222nd | 1223rd |
| Sexy primes (1st member) | 743rd | |
| Sexy primes (2nd member) | 742nd | |
| Sexy prime triplets (2nd member) | 202nd | |
| Roman numberals | ||
| Base 2 | 1010101110110012 | 1010101111011012 |
| Base 3 | 10100102223 | 10100112013 |
| Base 4 | 111131214 | 111132314 |
| Base 5 | 12004025 | 12004425 |
| Base 6 | 2454256 | 2455016 |
| Base 7 | 1210347 | 1210637 |
| Base 8 | 527318 | 527558 |
| Base 9 | 331289 | 331519 |
| Base 10 | 2197710 | 2199710 |
| Base 11 | 1556a11 | 1558811 |
| Base 12 | 1087512 | 1089112 |
| Base 13 | a00713 | a02113 |
| Base 14 | 801b14 | 803314 |
| Base 15 | 67a215 | 67b715 |
| Base 16 | 55d916 | 55ed16 |