Compare 21821 vs 22109
| Property | 21821 | 22109 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 218211 | 221091 |
| Prime factorization | 21821 | 22109 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21821 | 1, 22109 |
| Number of properties | 6 | 6 |
| Chen primes | 1201st | 1216th |
| Cousin primes (2nd member) | 372nd | |
| Harmonic primes | 912th | |
| Isolated primes | 1707th | |
| Long primes | 926th | 935th |
| Primes | 2448th | 2478th |
| Pythagorean primes | 1215th | 1228th |
| Twin primes (1st member) | 375th | |
| Roman numberals | ||
| Base 2 | 1010101001111012 | 1010110010111012 |
| Base 3 | 10022210123 | 10100222123 |
| Base 4 | 111103314 | 111211314 |
| Base 5 | 11442415 | 12014145 |
| Base 6 | 2450056 | 2502056 |
| Base 7 | 1204227 | 1213137 |
| Base 8 | 524758 | 531358 |
| Base 9 | 328359 | 332859 |
| Base 10 | 2182110 | 2210910 |
| Base 11 | 1543811 | 1567a11 |
| Base 12 | 1076512 | 1096512 |
| Base 13 | 9c1713 | a0a913 |
| Base 14 | 7d4914 | 80b314 |
| Base 15 | 66eb15 | 683e15 |
| Base 16 | 553d16 | 565d16 |