Compare 6491 vs 6689
| Property | 6491 | 6689 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 64911 | 66891 |
| Prime factorization | 6491 | 6689 |
| Divisors count | 2 | 2 |
| Divisors | 1, 6491 | 1, 6689 |
| Number of properties | 4 | 6 |
| Additive primes | 429th | |
| Chen primes | 460th | 470th |
| Good primes | 135th | |
| Isolated primes | 543rd | |
| Primes | 842nd | 862nd |
| Pythagorean primes | 425th | |
| Sophie germain primes | 143rd | |
| Twin primes (1st member) | 154th | |
| Roman numberals | ||
| Base 2 | 11001010110112 | 11010001000012 |
| Base 3 | 222201023 | 1000112023 |
| Base 4 | 12111234 | 12202014 |
| Base 5 | 2014315 | 2032245 |
| Base 6 | 500156 | 505456 |
| Base 7 | 246327 | 253347 |
| Base 8 | 145338 | 150418 |
| Base 9 | 88129 | 101529 |
| Base 10 | 649110 | 668910 |
| Base 11 | 497111 | 503111 |
| Base 12 | 390b12 | 3a5512 |
| Base 13 | 2c5413 | 307713 |
| Base 14 | 251914 | 261b14 |
| Base 15 | 1dcb15 | 1eae15 |
| Base 16 | 195b16 | 1a2116 |