Compare 21642 vs 21647
| Property | 21642 | 21647 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 31 × 36071 | 216471 |
| Prime factorization | 2 × 3 × 3607 | 21647 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 3, 6, 3607, 7214, 10821, 21642 | 1, 21647 |
| Number of properties | 0 | 4 |
| Chen primes | 1193rd | |
| Long primes | 918th | |
| Primes | 2430th | |
| Twin primes (1st member) | 370th | |
| Roman numberals | ||
| Base 2 | 1010100100010102 | 1010100100011112 |
| Base 3 | 10022001203 | 10022002023 |
| Base 4 | 111020224 | 111020334 |
| Base 5 | 11430325 | 11430425 |
| Base 6 | 2441106 | 2441156 |
| Base 7 | 1200457 | 1200537 |
| Base 8 | 522128 | 522178 |
| Base 9 | 326169 | 326229 |
| Base 10 | 2164210 | 2164710 |
| Base 11 | 1529511 | 1529a11 |
| Base 12 | 1063612 | 1063b12 |
| Base 13 | 9b0a13 | 9b1213 |
| Base 14 | 7c5c14 | 7c6314 |
| Base 15 | 662c15 | 663215 |
| Base 16 | 548a16 | 548f16 |