Compare 139915 vs 139921
| Property | 139915 | 139921 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 279831 | 1399211 |
| Prime factorization | 5 × 27983 | 139921 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 27983, 139915 | 1, 139921 |
| Number of properties | 1 | 4 |
| Centered square primes | 76th | |
| Isolated primes | 9789th | |
| Primes | 13002nd | |
| Pythagorean primes | 6476th | |
| Semiprimes | 32166th | |
| Roman numberals | ||
| Base 2 | 1000100010100010112 | 1000100010100100012 |
| Base 3 | 210022210013 | 210022210213 |
| Base 4 | 2020220234 | 2020221014 |
| Base 5 | 134341305 | 134341415 |
| Base 6 | 25554316 | 25554416 |
| Base 7 | 11216267 | 11216357 |
| Base 8 | 4212138 | 4212218 |
| Base 9 | 2328319 | 2328379 |
| Base 10 | 13991510 | 13992110 |
| Base 11 | 9613611 | 9614111 |
| Base 12 | 68b7712 | 68b8112 |
| Base 13 | 4b8b913 | 4b8c213 |
| Base 14 | 38dbd14 | 38dc514 |
| Base 15 | 2b6ca15 | 2b6d115 |
| Base 16 | 2228b16 | 2229116 |