Compare 1213 vs 1218
| Property | 1213 | 1218 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 4 |
| Prime factorization | 12131 | 21 × 31 × 71 × 291 |
| Prime factorization | 1213 | 2 × 3 × 7 × 29 |
| Divisors count | 2 | 16 |
| Divisors | 1, 1213 | 1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 87, 174, 203, 406, 609, 1218 |
| Number of properties | 7 | 0 |
| Additive primes | 106th | |
| Cousin primes (1st member) | 45th | |
| Emirps | 52nd | |
| Good primes | 49th | |
| Isolated primes | 117th | |
| Primes | 198th | |
| Pythagorean primes | 97th | |
| Roman numberals | MCCXIII | MCCXVIII |
| Base 2 | 100101111012 | 100110000102 |
| Base 3 | 11222213 | 12000103 |
| Base 4 | 1023314 | 1030024 |
| Base 5 | 143235 | 143335 |
| Base 6 | 53416 | 53506 |
| Base 7 | 33527 | 33607 |
| Base 8 | 22758 | 23028 |
| Base 9 | 15879 | 16039 |
| Base 10 | 121310 | 121810 |
| Base 11 | a0311 | a0811 |
| Base 12 | 85112 | 85612 |
| Base 13 | 72413 | 72913 |
| Base 14 | 62914 | 63014 |
| Base 15 | 55d15 | 56315 |
| Base 16 | 4bd16 | 4c216 |