Compare 21801 vs 21803
| Property | 21801 | 21803 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 31 × 132 × 431 | 218031 |
| Prime factorization | 3 × 13 × 13 × 43 | 21803 |
| Divisors count | 12 | 2 |
| Divisors | 1, 3, 13, 39, 43, 129, 169, 507, 559, 1677, 7267, 21801 | 1, 21803 |
| Number of properties | 0 | 5 |
| Cousin primes (2nd member) | 371st | |
| Harmonic primes | 900th | |
| Isolated primes | 1705th | |
| Primes | 2446th | |
| Sophie germain primes | 353rd | |
| Roman numberals | ||
| Base 2 | 1010101001010012 | 1010101001010112 |
| Base 3 | 10022201103 | 10022201123 |
| Base 4 | 111102214 | 111102234 |
| Base 5 | 11442015 | 11442035 |
| Base 6 | 2445336 | 2445356 |
| Base 7 | 1203637 | 1203657 |
| Base 8 | 524518 | 524538 |
| Base 9 | 328139 | 328159 |
| Base 10 | 2180110 | 2180310 |
| Base 11 | 1541a11 | 1542111 |
| Base 12 | 1074912 | 1074b12 |
| Base 13 | 9c0013 | 9c0213 |
| Base 14 | 7d3314 | 7d3514 |
| Base 15 | 66d615 | 66d815 |
| Base 16 | 552916 | 552b16 |