Compare 21499 vs 21502
| Property | 21499 | 21502 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 214991 | 21 × 131 × 8271 |
| Prime factorization | 21499 | 2 × 13 × 827 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21499 | 1, 2, 13, 26, 827, 1654, 10751, 21502 |
| Number of properties | 8 | 0 |
| Cousin primes (1st member) | 367th | |
| Harmonic primes | 887th | |
| Isolated primes | 1685th | |
| Lucky primes | 390th | |
| Primes | 2412th | |
| Sexy primes (2nd member) | 733rd | |
| Sexy prime quadrupletss (4th member) | 37th | |
| Sexy prime triplets (3rd member) | 199th | |
| Roman numberals | ||
| Base 2 | 1010011111110112 | 1010011111111102 |
| Base 3 | 10021110213 | 10021111013 |
| Base 4 | 110333234 | 110333324 |
| Base 5 | 11414445 | 11420025 |
| Base 6 | 2433116 | 2433146 |
| Base 7 | 1164527 | 1164557 |
| Base 8 | 517738 | 517768 |
| Base 9 | 324379 | 324419 |
| Base 10 | 2149910 | 2150210 |
| Base 11 | 1517511 | 1517811 |
| Base 12 | 1053712 | 1053a12 |
| Base 13 | 9a2a13 | 9a3013 |
| Base 14 | 7b9914 | 7b9c14 |
| Base 15 | 658415 | 658715 |
| Base 16 | 53fb16 | 53fe16 |