Compare 1219 vs 1231
| Property | 1219 | 1231 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 231 × 531 | 12311 |
| Prime factorization | 23 × 53 | 1231 |
| Divisors count | 4 | 2 |
| Divisors | 1, 23, 53, 1219 | 1, 1231 |
| Number of properties | 1 | 6 |
| Additive primes | 108th | |
| Emirps | 56th | |
| Lucky primes | 52nd | |
| Primes | 202nd | |
| Semiprimes | 360th | |
| Sexy primes (1st member) | 88th | |
| Twin primes (2nd member) | 42nd | |
| Roman numberals | MCCXIX | MCCXXXI |
| Base 2 | 100110000112 | 100110011112 |
| Base 3 | 12000113 | 12001213 |
| Base 4 | 1030034 | 1030334 |
| Base 5 | 143345 | 144115 |
| Base 6 | 53516 | 54116 |
| Base 7 | 33617 | 34067 |
| Base 8 | 23038 | 23178 |
| Base 9 | 16049 | 16179 |
| Base 10 | 121910 | 123110 |
| Base 11 | a0911 | a1a11 |
| Base 12 | 85712 | 86712 |
| Base 13 | 72a13 | 73913 |
| Base 14 | 63114 | 63d14 |
| Base 15 | 56415 | 57115 |
| Base 16 | 4c316 | 4cf16 |