Compare 640247 vs 640943
| Property | 640247 | 640943 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6402471 | 6409431 |
| Prime factorization | 640247 | 640943 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640247 | 1, 640943 |
| Number of properties | 5 | 6 |
| Additive primes | 20362nd | |
| Chen primes | 20388th | 20406th |
| Isolated primes | 40870th | |
| Primes | 52097th | 52145th |
| Safe primes | 3021st | |
| Sexy primes (1st member) | 11299th | |
| Twin primes (1st member) | 5635th | |
| Ulam primes | 3818th | 3822nd |
| Roman numberals | ||
| Base 2 | 100111000100111101112 | 100111000111101011112 |
| Base 3 | 10121120202123 | 10121200121223 |
| Base 4 | 21301033134 | 21301322334 |
| Base 5 | 1304414425 | 1310022335 |
| Base 6 | 214200356 | 214231556 |
| Base 7 | 53044167 | 53064327 |
| Base 8 | 23423678 | 23436578 |
| Base 9 | 11752259 | 11761789 |
| Base 10 | 64024710 | 64094310 |
| Base 11 | 3a803311 | 3a860611 |
| Base 12 | 26a61b12 | 26aabb12 |
| Base 13 | 19555a13 | 19597413 |
| Base 14 | 12947d14 | 12981914 |
| Base 15 | c9a8215 | c9d9815 |
| Base 16 | 9c4f716 | 9c7af16 |