Compare 1366 vs 1373
| Property | 1366 | 1373 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 6831 | 13731 |
| Prime factorization | 2 × 683 | 1373 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 683, 1366 | 1, 1373 |
| Number of properties | 1 | 7 |
| Happy primes | 43rd | |
| Isolated primes | 129th | |
| Left-truncatable primes | 58th | |
| Primes | 220th | |
| Pythagorean primes | 108th | |
| Semiprimes | 403rd | |
| Sexy primes (2nd member) | 96th | |
| Sexy prime triplets (3rd member) | 36th | |
| Roman numberals | MCCCLXVI | MCCCLXXIII |
| Base 2 | 101010101102 | 101010111012 |
| Base 3 | 12121213 | 12122123 |
| Base 4 | 1111124 | 1111314 |
| Base 5 | 204315 | 204435 |
| Base 6 | 101546 | 102056 |
| Base 7 | 36617 | 40017 |
| Base 8 | 25268 | 25358 |
| Base 9 | 17779 | 17859 |
| Base 10 | 136610 | 137310 |
| Base 11 | 103211 | 103911 |
| Base 12 | 95a12 | 96512 |
| Base 13 | 81113 | 81813 |
| Base 14 | 6d814 | 70114 |
| Base 15 | 61115 | 61815 |
| Base 16 | 55616 | 55d16 |