Compare 639949 vs 640249
| Property | 639949 | 640249 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399491 | 6402491 |
| Prime factorization | 639949 | 640249 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639949 | 1, 640249 |
| Number of properties | 3 | 3 |
| Isolated primes | 40810th | |
| Primes | 52071st | 52098th |
| Twin primes (2nd member) | 5635th | |
| Ulam primes | 3816th | 3819th |
| Roman numberals | ||
| Base 2 | 100111000011110011012 | 100111000100111110012 |
| Base 3 | 10121112112113 | 10121120202213 |
| Base 4 | 21300330314 | 21301033214 |
| Base 5 | 1304342445 | 1304414445 |
| Base 6 | 214144216 | 214200416 |
| Base 7 | 53035127 | 53044217 |
| Base 8 | 23417158 | 23423718 |
| Base 9 | 11747549 | 11752279 |
| Base 10 | 63994910 | 64024910 |
| Base 11 | 3a789211 | 3a803511 |
| Base 12 | 26a41112 | 26a62112 |
| Base 13 | 19538b13 | 19555c13 |
| Base 14 | 12930914 | 12948114 |
| Base 15 | c993415 | c9a8415 |
| Base 16 | 9c3cd16 | 9c4f916 |