Compare 21808 vs 21817
| Property | 21808 | 21817 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 24 × 291 × 471 | 218171 |
| Prime factorization | 2 × 2 × 2 × 2 × 29 × 47 | 21817 |
| Divisors count | 20 | 2 |
| Divisors | 1, 2, 4, 8, 16, 29, 47, 58, 94, 116, 188, 232, 376, 464, 752, 1363, 2726, 5452, 10904, 21808 | 1, 21817 |
| Number of properties | 0 | 8 |
| Additive primes | 1132nd | |
| Cousin primes (1st member) | 372nd | |
| Harmonic primes | 901st | |
| Isolated primes | 1706th | |
| Long primes | 925th | |
| Primes | 2447th | |
| Pythagorean primes | 1214th | |
| Super primes | 363rd | |
| Roman numberals | ||
| Base 2 | 1010101001100002 | 1010101001110012 |
| Base 3 | 10022202013 | 10022210013 |
| Base 4 | 111103004 | 111103214 |
| Base 5 | 11442135 | 11442325 |
| Base 6 | 2445446 | 2450016 |
| Base 7 | 1204037 | 1204157 |
| Base 8 | 524608 | 524718 |
| Base 9 | 328219 | 328319 |
| Base 10 | 2180810 | 2181710 |
| Base 11 | 1542611 | 1543411 |
| Base 12 | 1075412 | 1076112 |
| Base 13 | 9c0713 | 9c1313 |
| Base 14 | 7d3a14 | 7d4514 |
| Base 15 | 66dd15 | 66e715 |
| Base 16 | 553016 | 553916 |