Compare 639949 vs 640919
| Property | 639949 | 640919 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399491 | 6409191 |
| Prime factorization | 639949 | 640919 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639949 | 1, 640919 |
| Number of properties | 3 | 5 |
| Additive primes | 20378th | |
| Chen primes | 20405th | |
| Isolated primes | 40810th | 40868th |
| Primes | 52071st | 52143rd |
| Ulam primes | 3816th | 3821st |
| Roman numberals | ||
| Base 2 | 100111000011110011012 | 100111000111100101112 |
| Base 3 | 10121112112113 | 10121200112023 |
| Base 4 | 21300330314 | 21301321134 |
| Base 5 | 1304342445 | 1310021345 |
| Base 6 | 214144216 | 214231156 |
| Base 7 | 53035127 | 53063667 |
| Base 8 | 23417158 | 23436278 |
| Base 9 | 11747549 | 11761529 |
| Base 10 | 63994910 | 64091910 |
| Base 11 | 3a789211 | 3a859411 |
| Base 12 | 26a41112 | 26aa9b12 |
| Base 13 | 19538b13 | 19595613 |
| Base 14 | 12930914 | 1297dd14 |
| Base 15 | c993415 | c9d7e15 |
| Base 16 | 9c3cd16 | 9c79716 |