Compare 1381 vs 1583
| Property | 1381 | 1583 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 13811 | 15831 |
| Prime factorization | 1381 | 1583 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1381 | 1, 1583 |
| Number of properties | 7 | 9 |
| Additive primes | 122nd | 135th |
| Chen primes | 144th | 159th |
| Cousin primes (2nd member) | 56th | |
| Emirps | 64th | 76th |
| Harmonic primes | 84th | |
| Isolated primes | 130th | 151st |
| Long primes | 86th | 98th |
| Primes | 221st | 250th |
| Pythagorean primes | 109th | |
| Sophie germain primes | 53rd | |
| Roman numberals | MCCCLXXXI | MDLXXXIII |
| Base 2 | 101011001012 | 110001011112 |
| Base 3 | 12200113 | 20111223 |
| Base 4 | 1112114 | 1202334 |
| Base 5 | 210115 | 223135 |
| Base 6 | 102216 | 111556 |
| Base 7 | 40127 | 44217 |
| Base 8 | 25458 | 30578 |
| Base 9 | 18049 | 21489 |
| Base 10 | 138110 | 158310 |
| Base 11 | 104611 | 120a11 |
| Base 12 | 97112 | abb12 |
| Base 13 | 82313 | 94a13 |
| Base 14 | 70914 | 81114 |
| Base 15 | 62115 | 70815 |
| Base 16 | 56516 | 62f16 |