Compare 638971 vs 640249
| Property | 638971 | 640249 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6389711 | 6402491 |
| Prime factorization | 638971 | 640249 |
| Divisors count | 2 | 2 |
| Divisors | 1, 638971 | 1, 640249 |
| Number of properties | 4 | 3 |
| Isolated primes | 40752nd | |
| Primes | 51999th | 52098th |
| Sexy primes (1st member) | 11267th | |
| Twin primes (2nd member) | 5635th | |
| Ulam primes | 3811th | 3819th |
| Roman numberals | ||
| Base 2 | 100110111111111110112 | 100111000100111110012 |
| Base 3 | 10121101111213 | 10121120202213 |
| Base 4 | 21233333234 | 21301033214 |
| Base 5 | 1304213415 | 1304414445 |
| Base 6 | 214101116 | 214200416 |
| Base 7 | 53006147 | 53044217 |
| Base 8 | 23377738 | 23423718 |
| Base 9 | 11734479 | 11752279 |
| Base 10 | 63897110 | 64024910 |
| Base 11 | 3a708311 | 3a803511 |
| Base 12 | 26993712 | 26a62112 |
| Base 13 | 194ab813 | 19555c13 |
| Base 14 | 128c0b14 | 12948114 |
| Base 15 | c94d115 | c9a8415 |
| Base 16 | 9bffb16 | 9c4f916 |