Compare 1381 vs 1567
| Property | 1381 | 1567 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 13811 | 15671 |
| Prime factorization | 1381 | 1567 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1381 | 1, 1567 |
| Number of properties | 7 | 7 |
| Additive primes | 122nd | 134th |
| Chen primes | 144th | 158th |
| Cousin primes (1st member) | 55th | |
| Emirps | 64th | |
| Isolated primes | 130th | 148th |
| Long primes | 86th | 95th |
| Lucky primes | 59th | |
| Primes | 221st | 247th |
| Pythagorean primes | 109th | |
| Roman numberals | MCCCLXXXI | MDLXVII |
| Base 2 | 101011001012 | 110000111112 |
| Base 3 | 12200113 | 20110013 |
| Base 4 | 1112114 | 1201334 |
| Base 5 | 210115 | 222325 |
| Base 6 | 102216 | 111316 |
| Base 7 | 40127 | 43667 |
| Base 8 | 25458 | 30378 |
| Base 9 | 18049 | 21319 |
| Base 10 | 138110 | 156710 |
| Base 11 | 104611 | 11a511 |
| Base 12 | 97112 | aa712 |
| Base 13 | 82313 | 93713 |
| Base 14 | 70914 | 7dd14 |
| Base 15 | 62115 | 6e715 |
| Base 16 | 56516 | 61f16 |