Compare 1371 vs 1381
| Property | 1371 | 1381 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 4571 | 13811 |
| Prime factorization | 3 × 457 | 1381 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 457, 1371 | 1, 1381 |
| Number of properties | 1 | 7 |
| Additive primes | 122nd | |
| Chen primes | 144th | |
| Emirps | 64th | |
| Isolated primes | 130th | |
| Long primes | 86th | |
| Primes | 221st | |
| Pythagorean primes | 109th | |
| Semiprimes | 405th | |
| Roman numberals | MCCCLXXI | MCCCLXXXI |
| Base 2 | 101010110112 | 101011001012 |
| Base 3 | 12122103 | 12200113 |
| Base 4 | 1111234 | 1112114 |
| Base 5 | 204415 | 210115 |
| Base 6 | 102036 | 102216 |
| Base 7 | 36667 | 40127 |
| Base 8 | 25338 | 25458 |
| Base 9 | 17839 | 18049 |
| Base 10 | 137110 | 138110 |
| Base 11 | 103711 | 104611 |
| Base 12 | 96312 | 97112 |
| Base 13 | 81613 | 82313 |
| Base 14 | 6dd14 | 70914 |
| Base 15 | 61615 | 62115 |
| Base 16 | 55b16 | 56516 |