Compare 21661 vs 21803
| Property | 21661 | 21803 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 216611 | 218031 |
| Prime factorization | 21661 | 21803 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21661 | 1, 21803 |
| Number of properties | 4 | 5 |
| Cousin primes (2nd member) | 371st | |
| Harmonic primes | 894th | 900th |
| Isolated primes | 1693rd | 1705th |
| Primes | 2432nd | 2446th |
| Pythagorean primes | 1207th | |
| Sophie germain primes | 353rd | |
| Roman numberals | ||
| Base 2 | 1010100100111012 | 1010101001010112 |
| Base 3 | 10022010213 | 10022201123 |
| Base 4 | 111021314 | 111102234 |
| Base 5 | 11431215 | 11442035 |
| Base 6 | 2441416 | 2445356 |
| Base 7 | 1201037 | 1203657 |
| Base 8 | 522358 | 524538 |
| Base 9 | 326379 | 328159 |
| Base 10 | 2166110 | 2180310 |
| Base 11 | 1530211 | 1542111 |
| Base 12 | 1065112 | 1074b12 |
| Base 13 | 9b2313 | 9c0213 |
| Base 14 | 7c7314 | 7d3514 |
| Base 15 | 664115 | 66d815 |
| Base 16 | 549d16 | 552b16 |