Compare 640247 vs 641579
| Property | 640247 | 641579 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6402471 | 6415791 |
| Prime factorization | 640247 | 641579 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640247 | 1, 641579 |
| Number of properties | 5 | 5 |
| Additive primes | 20362nd | |
| Chen primes | 20388th | 20419th |
| Happy primes | 7430th | |
| Primes | 52097th | 52191st |
| Sophie germain primes | 5321st | |
| Twin primes (1st member) | 5635th | 5643rd |
| Ulam primes | 3818th | |
| Roman numberals | ||
| Base 2 | 100111000100111101112 | 100111001010001010112 |
| Base 3 | 10121120202123 | 10121210020123 |
| Base 4 | 21301033134 | 21302202234 |
| Base 5 | 1304414425 | 1310123045 |
| Base 6 | 214200356 | 214301356 |
| Base 7 | 53044167 | 53113317 |
| Base 8 | 23423678 | 23450538 |
| Base 9 | 11752259 | 11770659 |
| Base 10 | 64024710 | 64157910 |
| Base 11 | 3a803311 | 3a903411 |
| Base 12 | 26a61b12 | 26b34b12 |
| Base 13 | 19555a13 | 19604313 |
| Base 14 | 12947d14 | 129b5114 |
| Base 15 | c9a8215 | ca16e15 |
| Base 16 | 9c4f716 | 9ca2b16 |