Compare 1381 vs 1571
| Property | 1381 | 1571 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 13811 | 15711 |
| Prime factorization | 1381 | 1571 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1381 | 1, 1571 |
| Number of properties | 7 | 4 |
| Additive primes | 122nd | |
| Chen primes | 144th | |
| Cousin primes (2nd member) | 55th | |
| Emirps | 64th | |
| Isolated primes | 130th | 149th |
| Long primes | 86th | 96th |
| Primes | 221st | 248th |
| Pythagorean primes | 109th | |
| Roman numberals | MCCCLXXXI | MDLXXI |
| Base 2 | 101011001012 | 110001000112 |
| Base 3 | 12200113 | 20110123 |
| Base 4 | 1112114 | 1202034 |
| Base 5 | 210115 | 222415 |
| Base 6 | 102216 | 111356 |
| Base 7 | 40127 | 44037 |
| Base 8 | 25458 | 30438 |
| Base 9 | 18049 | 21359 |
| Base 10 | 138110 | 157110 |
| Base 11 | 104611 | 11a911 |
| Base 12 | 97112 | aab12 |
| Base 13 | 82313 | 93b13 |
| Base 14 | 70914 | 80314 |
| Base 15 | 62115 | 6eb15 |
| Base 16 | 56516 | 62316 |