Compare 21001 vs 21221
| Property | 21001 | 21221 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 210011 | 212211 |
| Prime factorization | 21001 | 21221 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21001 | 1, 21221 |
| Number of properties | 5 | 6 |
| Chen primes | 1162nd | 1172nd |
| Harmonic primes | 867th | |
| Isolated primes | 1648th | 1665th |
| Primes | 2361st | 2386th |
| Pythagorean primes | 1173rd | 1184th |
| Sexy primes (1st member) | 723rd | |
| Sophie germain primes | 346th | |
| Roman numberals | ||
| Base 2 | 1010010000010012 | 1010010111001012 |
| Base 3 | 10012102113 | 10020022223 |
| Base 4 | 110200214 | 110232114 |
| Base 5 | 11330015 | 11343415 |
| Base 6 | 2411216 | 2421256 |
| Base 7 | 1151417 | 1156047 |
| Base 8 | 510118 | 513458 |
| Base 9 | 317249 | 320889 |
| Base 10 | 2100110 | 2122110 |
| Base 11 | 1486211 | 14a4211 |
| Base 12 | 101a112 | 1034512 |
| Base 13 | 973613 | 987513 |
| Base 14 | 792114 | 7a3b14 |
| Base 15 | 635115 | 644b15 |
| Base 16 | 520916 | 52e516 |