Compare 21739 vs 21745
| Property | 21739 | 21745 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 217391 | 51 × 43491 |
| Prime factorization | 21739 | 5 × 4349 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21739 | 1, 5, 4349, 21745 |
| Number of properties | 4 | 1 |
| Chen primes | 1198th | |
| Lucky primes | 393rd | |
| Primes | 2439th | |
| Semiprimes | 5497th | |
| Twin primes (2nd member) | 371st | |
| Roman numberals | ||
| Base 2 | 1010100111010112 | 1010100111100012 |
| Base 3 | 10022110113 | 10022111013 |
| Base 4 | 111032234 | 111033014 |
| Base 5 | 11434245 | 11434405 |
| Base 6 | 2443516 | 2444016 |
| Base 7 | 1202447 | 1202537 |
| Base 8 | 523538 | 523618 |
| Base 9 | 327349 | 327419 |
| Base 10 | 2173910 | 2174510 |
| Base 11 | 1537311 | 1537911 |
| Base 12 | 106b712 | 1070112 |
| Base 13 | 9b8313 | 9b8913 |
| Base 14 | 7ccb14 | 7cd314 |
| Base 15 | 669415 | 669a15 |
| Base 16 | 54eb16 | 54f116 |