Compare 256981 vs 256987
| Property | 256981 | 256987 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2569811 | 791 × 32531 |
| Prime factorization | 256981 | 79 × 3253 |
| Divisors count | 2 | 4 |
| Divisors | 1, 256981 | 1, 79, 3253, 256987 |
| Number of properties | 5 | 1 |
| Additive primes | 9133rd | |
| Chen primes | 9339th | |
| Isolated primes | 17316th | |
| Long primes | 8457th | |
| Primes | 22597th | |
| Semiprimes | 57429th | |
| Roman numberals | ||
| Base 2 | 1111101011110101012 | 1111101011110110112 |
| Base 3 | 1110011112113 | 1110011120013 |
| Base 4 | 3322331114 | 3322331234 |
| Base 5 | 312104115 | 312104225 |
| Base 6 | 53014216 | 53014316 |
| Base 7 | 21201347 | 21201437 |
| Base 8 | 7657258 | 7657338 |
| Base 9 | 4314549 | 4314619 |
| Base 10 | 25698110 | 25698710 |
| Base 11 | 16608a11 | 16609511 |
| Base 12 | 10487112 | 10487712 |
| Base 13 | 8cc7a13 | 8cc8313 |
| Base 14 | 6991b14 | 6992314 |
| Base 15 | 5122115 | 5122715 |
| Base 16 | 3ebd516 | 3ebdb16 |