Compare 18121 vs 18123
| Property | 18121 | 18123 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 181211 | 31 × 71 × 8631 |
| Prime factorization | 18121 | 3 × 7 × 863 |
| Divisors count | 2 | 8 |
| Divisors | 1, 18121 | 1, 3, 7, 21, 863, 2589, 6041, 18123 |
| Number of properties | 7 | 0 |
| Additive primes | 975th | |
| Harmonic primes | 751st | |
| Primes | 2076th | |
| Pythagorean primes | 1025th | |
| Sexy primes (1st member) | 640th | |
| Sexy prime triplets (1st member) | 178th | |
| Twin primes (2nd member) | 319th | |
| Roman numberals | ||
| Base 2 | 1000110110010012 | 1000110110010112 |
| Base 3 | 2202120113 | 2202120203 |
| Base 4 | 101230214 | 101230234 |
| Base 5 | 10344415 | 10344435 |
| Base 6 | 2155216 | 2155236 |
| Base 7 | 1035557 | 1035607 |
| Base 8 | 433118 | 433138 |
| Base 9 | 267649 | 267669 |
| Base 10 | 1812110 | 1812310 |
| Base 11 | 1268411 | 1268611 |
| Base 12 | a5a112 | a5a312 |
| Base 13 | 832c13 | 833113 |
| Base 14 | 686514 | 686714 |
| Base 15 | 558115 | 558315 |
| Base 16 | 46c916 | 46cb16 |