Compare 21661 vs 21859
| Property | 21661 | 21859 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 216611 | 218591 |
| Prime factorization | 21661 | 21859 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21661 | 1, 21859 |
| Number of properties | 4 | 5 |
| Cousin primes (1st member) | 373rd | |
| Harmonic primes | 894th | 903rd |
| Isolated primes | 1693rd | 1709th |
| Long primes | 928th | |
| Primes | 2432nd | 2452nd |
| Pythagorean primes | 1207th | |
| Roman numberals | ||
| Base 2 | 1010100100111012 | 1010101011000112 |
| Base 3 | 10022010213 | 10022221213 |
| Base 4 | 111021314 | 111112034 |
| Base 5 | 11431215 | 11444145 |
| Base 6 | 2441416 | 2451116 |
| Base 7 | 1201037 | 1205057 |
| Base 8 | 522358 | 525438 |
| Base 9 | 326379 | 328779 |
| Base 10 | 2166110 | 2185910 |
| Base 11 | 1530211 | 1547211 |
| Base 12 | 1065112 | 1079712 |
| Base 13 | 9b2313 | 9c4613 |
| Base 14 | 7c7314 | 7d7514 |
| Base 15 | 664115 | 672415 |
| Base 16 | 549d16 | 556316 |