Compare 21803 vs 21815
| Property | 21803 | 21815 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 218031 | 51 × 43631 |
| Prime factorization | 21803 | 5 × 4363 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21803 | 1, 5, 4363, 21815 |
| Number of properties | 5 | 1 |
| Cousin primes (2nd member) | 371st | |
| Harmonic primes | 900th | |
| Isolated primes | 1705th | |
| Primes | 2446th | |
| Semiprimes | 5512th | |
| Sophie germain primes | 353rd | |
| Roman numberals | ||
| Base 2 | 1010101001010112 | 1010101001101112 |
| Base 3 | 10022201123 | 10022202223 |
| Base 4 | 111102234 | 111103134 |
| Base 5 | 11442035 | 11442305 |
| Base 6 | 2445356 | 2445556 |
| Base 7 | 1203657 | 1204137 |
| Base 8 | 524538 | 524678 |
| Base 9 | 328159 | 328289 |
| Base 10 | 2180310 | 2181510 |
| Base 11 | 1542111 | 1543211 |
| Base 12 | 1074b12 | 1075b12 |
| Base 13 | 9c0213 | 9c1113 |
| Base 14 | 7d3514 | 7d4314 |
| Base 15 | 66d815 | 66e515 |
| Base 16 | 552b16 | 553716 |