Compare 20921 vs 21611
| Property | 20921 | 21611 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209211 | 216111 |
| Prime factorization | 20921 | 21611 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20921 | 1, 21611 |
| Number of properties | 5 | 8 |
| Additive primes | 1125th | |
| Chen primes | 1191st | |
| Harmonic primes | 864th | |
| Isolated primes | 1642nd | |
| Long primes | 916th | |
| Primes | 2353rd | 2427th |
| Prime triplets (1st member) | 185th | |
| Pythagorean primes | 1170th | |
| Sexy primes (1st member) | 738th | |
| Sophie germain primes | 339th | 350th |
| Twin primes (1st member) | 369th | |
| Roman numberals | ||
| Base 2 | 1010001101110012 | 1010100011010112 |
| Base 3 | 10012002123 | 10021221023 |
| Base 4 | 110123214 | 111012234 |
| Base 5 | 11321415 | 11424215 |
| Base 6 | 2405056 | 2440156 |
| Base 7 | 1146657 | 1200027 |
| Base 8 | 506718 | 521538 |
| Base 9 | 316259 | 325729 |
| Base 10 | 2092110 | 2161110 |
| Base 11 | 1479a11 | 1526711 |
| Base 12 | 1013512 | 1060b12 |
| Base 13 | 96a413 | 9ab513 |
| Base 14 | 78a514 | 7c3914 |
| Base 15 | 62eb15 | 660b15 |
| Base 16 | 51b916 | 546b16 |