Compare 31139 vs 31145
| Property | 31139 | 31145 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 311391 | 51 × 62291 |
| Prime factorization | 31139 | 5 × 6229 |
| Divisors count | 2 | 4 |
| Divisors | 1, 31139 | 1, 5, 6229, 31145 |
| Number of properties | 7 | 1 |
| Additive primes | 1515th | |
| Emirps | 669th | |
| Good primes | 333rd | |
| Isolated primes | 2394th | |
| Long primes | 1271st | |
| Primes | 3353rd | |
| Safe primes | 272nd | |
| Semiprimes | 7739th | |
| Roman numberals | ||
| Base 2 | 1111001101000112 | 1111001101010012 |
| Base 3 | 11202010223 | 11202011123 |
| Base 4 | 132122034 | 132122214 |
| Base 5 | 14440245 | 14440405 |
| Base 6 | 4000556 | 4001056 |
| Base 7 | 1565337 | 1565427 |
| Base 8 | 746438 | 746518 |
| Base 9 | 466389 | 466459 |
| Base 10 | 3113910 | 3114510 |
| Base 11 | 2143911 | 2144411 |
| Base 12 | 1602b12 | 1603512 |
| Base 13 | 1123413 | 1123a13 |
| Base 14 | b4c314 | b4c914 |
| Base 15 | 935e15 | 936515 |
| Base 16 | 79a316 | 79a916 |