Compare 21491 vs 21841
| Property | 21491 | 21841 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 214911 | 218411 |
| Prime factorization | 21491 | 21841 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21491 | 1, 21841 |
| Number of properties | 9 | 6 |
| Additive primes | 1116th | |
| Centered square primes | 38th | |
| Chen primes | 1183rd | |
| Cousin primes (2nd member) | 366th | |
| Good primes | 272nd | |
| Happy primes | 401st | 406th |
| Harmonic primes | 885th | |
| Lucky primes | 397th | |
| Primes | 2410th | 2450th |
| Prime triplets (2nd member) | 182nd | |
| Pythagorean primes | 1216th | |
| Twin primes (1st member) | 364th | |
| Twin primes (2nd member) | 372nd | |
| Roman numberals | ||
| Base 2 | 1010011111100112 | 1010101010100012 |
| Base 3 | 10021102223 | 10022212213 |
| Base 4 | 110333034 | 111111014 |
| Base 5 | 11414315 | 11443315 |
| Base 6 | 2432556 | 2450416 |
| Base 7 | 1164417 | 1204517 |
| Base 8 | 517638 | 525218 |
| Base 9 | 324289 | 328579 |
| Base 10 | 2149110 | 2184110 |
| Base 11 | 1516811 | 1545611 |
| Base 12 | 1052b12 | 1078112 |
| Base 13 | 9a2213 | 9c3113 |
| Base 14 | 7b9114 | 7d6114 |
| Base 15 | 657b15 | 671115 |
| Base 16 | 53f316 | 555116 |