Compare 255989 vs 255991
| Property | 255989 | 255991 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2559891 | 2811 × 9111 |
| Prime factorization | 255989 | 281 × 911 |
| Divisors count | 2 | 4 |
| Divisors | 1, 255989 | 1, 281, 911, 255991 |
| Number of properties | 5 | 1 |
| Chen primes | 9307th | |
| Happy primes | 3380th | |
| Isolated primes | 17262nd | |
| Long primes | 8434th | |
| Primes | 22525th | |
| Semiprimes | 57198th | |
| Roman numberals | ||
| Base 2 | 1111100111111101012 | 1111100111111101112 |
| Base 3 | 1110000110023 | 1110000110113 |
| Base 4 | 3321333114 | 3321333134 |
| Base 5 | 311424245 | 311424315 |
| Base 6 | 52530456 | 52530516 |
| Base 7 | 21142167 | 21142217 |
| Base 8 | 7637658 | 7637678 |
| Base 9 | 4301329 | 4301349 |
| Base 10 | 25598910 | 25599110 |
| Base 11 | 16536811 | 16536a11 |
| Base 12 | 10418512 | 10418712 |
| Base 13 | 8c69613 | 8c69813 |
| Base 14 | 6940d14 | 6941114 |
| Base 15 | 50cae15 | 50cb115 |
| Base 16 | 3e7f516 | 3e7f716 |