Compare 640127 vs 640247
| Property | 640127 | 640247 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401271 | 6402471 |
| Prime factorization | 640127 | 640247 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640127 | 1, 640247 |
| Number of properties | 4 | 5 |
| Additive primes | 20362nd | |
| Chen primes | 20388th | |
| Isolated primes | 40824th | |
| Primes | 52087th | 52097th |
| Safe primes | 3017th | |
| Sexy primes (2nd member) | 11286th | |
| Twin primes (1st member) | 5635th | |
| Ulam primes | 3818th | |
| Roman numberals | ||
| Base 2 | 100111000100011111112 | 100111000100111101112 |
| Base 3 | 10121120021023 | 10121120202123 |
| Base 4 | 21301013334 | 21301033134 |
| Base 5 | 1304410025 | 1304414425 |
| Base 6 | 214153156 | 214200356 |
| Base 7 | 53041557 | 53044167 |
| Base 8 | 23421778 | 23423678 |
| Base 9 | 11750729 | 11752259 |
| Base 10 | 64012710 | 64024710 |
| Base 11 | 3a7a3411 | 3a803311 |
| Base 12 | 26a53b12 | 26a61b12 |
| Base 13 | 19549713 | 19555a13 |
| Base 14 | 1293d514 | 12947d14 |
| Base 15 | c9a0215 | c9a8215 |
| Base 16 | 9c47f16 | 9c4f716 |