Compare 21559 vs 21562
| Property | 21559 | 21562 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 215591 | 21 × 107811 |
| Prime factorization | 21559 | 2 × 10781 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21559 | 1, 2, 10781, 21562 |
| Number of properties | 5 | 1 |
| Chen primes | 1187th | |
| Cousin primes (1st member) | 369th | |
| Primes | 2419th | |
| Prime triplets (2nd member) | 184th | |
| Semiprimes | 5456th | |
| Twin primes (2nd member) | 366th | |
| Roman numberals | ||
| Base 2 | 1010100001101112 | 1010100001110102 |
| Base 3 | 10021201113 | 10021201213 |
| Base 4 | 111003134 | 111003224 |
| Base 5 | 11422145 | 11422225 |
| Base 6 | 2434516 | 2434546 |
| Base 7 | 1165667 | 1166027 |
| Base 8 | 520678 | 520728 |
| Base 9 | 325149 | 325179 |
| Base 10 | 2155910 | 2156210 |
| Base 11 | 1521a11 | 1522211 |
| Base 12 | 1058712 | 1058a12 |
| Base 13 | 9a7513 | 9a7813 |
| Base 14 | 7bdd14 | 7c0214 |
| Base 15 | 65c415 | 65c715 |
| Base 16 | 543716 | 543a16 |