Compare 640247 vs 640919
| Property | 640247 | 640919 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6402471 | 6409191 |
| Prime factorization | 640247 | 640919 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640247 | 1, 640919 |
| Number of properties | 5 | 5 |
| Additive primes | 20362nd | 20378th |
| Chen primes | 20388th | 20405th |
| Isolated primes | 40868th | |
| Primes | 52097th | 52143rd |
| Twin primes (1st member) | 5635th | |
| Ulam primes | 3818th | 3821st |
| Roman numberals | ||
| Base 2 | 100111000100111101112 | 100111000111100101112 |
| Base 3 | 10121120202123 | 10121200112023 |
| Base 4 | 21301033134 | 21301321134 |
| Base 5 | 1304414425 | 1310021345 |
| Base 6 | 214200356 | 214231156 |
| Base 7 | 53044167 | 53063667 |
| Base 8 | 23423678 | 23436278 |
| Base 9 | 11752259 | 11761529 |
| Base 10 | 64024710 | 64091910 |
| Base 11 | 3a803311 | 3a859411 |
| Base 12 | 26a61b12 | 26aa9b12 |
| Base 13 | 19555a13 | 19595613 |
| Base 14 | 12947d14 | 1297dd14 |
| Base 15 | c9a8215 | c9d7e15 |
| Base 16 | 9c4f716 | 9c79716 |