Compare 639949 vs 640963
| Property | 639949 | 640963 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399491 | 6409631 |
| Prime factorization | 639949 | 640963 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639949 | 1, 640963 |
| Number of properties | 3 | 6 |
| Cousin primes (1st member) | 5638th | |
| Isolated primes | 40810th | 40873rd |
| Lucky primes | 5983rd | |
| Primes | 52071st | 52148th |
| Sexy primes (2nd member) | 11300th | |
| Ulam primes | 3816th | 3823rd |
| Roman numberals | ||
| Base 2 | 100111000011110011012 | 100111000111110000112 |
| Base 3 | 10121112112113 | 10121200201013 |
| Base 4 | 21300330314 | 21301330034 |
| Base 5 | 1304342445 | 1310023235 |
| Base 6 | 214144216 | 214232316 |
| Base 7 | 53035127 | 53064617 |
| Base 8 | 23417158 | 23437038 |
| Base 9 | 11747549 | 11762119 |
| Base 10 | 63994910 | 64096310 |
| Base 11 | 3a789211 | 3a862411 |
| Base 12 | 26a41112 | 26ab1712 |
| Base 13 | 19538b13 | 19598b13 |
| Base 14 | 12930914 | 12983114 |
| Base 15 | c993415 | c9dad15 |
| Base 16 | 9c3cd16 | 9c7c316 |