Compare 1237 vs 1291
| Property | 1237 | 1291 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 12371 | 12911 |
| Prime factorization | 1237 | 1291 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1237 | 1, 1291 |
| Number of properties | 7 | 9 |
| Additive primes | 109th | 113th |
| Chen primes | 137th | |
| Emirps | 57th | |
| Harmonic primes | 71st | 73rd |
| Isolated primes | 120th | |
| Long primes | 80th | |
| Lucky primes | 54th | |
| Primes | 203rd | 210th |
| Pythagorean primes | 100th | |
| Sexy primes (1st member) | 91st | |
| Sexy primes (2nd member) | 88th | |
| Sexy prime triplets (1st member) | 35th | |
| Twin primes (2nd member) | 44th | |
| Roman numberals | MCCXXXVII | MCCXCI |
| Base 2 | 100110101012 | 101000010112 |
| Base 3 | 12002113 | 12022113 |
| Base 4 | 1031114 | 1100234 |
| Base 5 | 144225 | 201315 |
| Base 6 | 54216 | 55516 |
| Base 7 | 34157 | 35237 |
| Base 8 | 23258 | 24138 |
| Base 9 | 16249 | 16849 |
| Base 10 | 123710 | 129110 |
| Base 11 | a2511 | a7411 |
| Base 12 | 87112 | 8b712 |
| Base 13 | 74213 | 78413 |
| Base 14 | 64514 | 68314 |
| Base 15 | 57715 | 5b115 |
| Base 16 | 4d516 | 50b16 |