Compare 639677 vs 640007
| Property | 639677 | 640007 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6396771 | 6400071 |
| Prime factorization | 639677 | 640007 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639677 | 1, 640007 |
| Number of properties | 5 | 5 |
| Additive primes | 20350th | |
| Chen primes | 20363rd | 20377th |
| Primes | 52051st | 52075th |
| Sexy primes (2nd member) | 11280th | |
| Super primes | 5323rd | |
| Twin primes (1st member) | 5629th | 5632nd |
| Ulam primes | 3817th | |
| Roman numberals | ||
| Base 2 | 100111000010101111012 | 100111000100000001112 |
| Base 3 | 10121111102023 | 10121112202223 |
| Base 4 | 21300223314 | 21301000134 |
| Base 5 | 1304322025 | 1304400125 |
| Base 6 | 214132456 | 214145556 |
| Base 7 | 53026437 | 53036247 |
| Base 8 | 23412758 | 23420078 |
| Base 9 | 11744229 | 11748289 |
| Base 10 | 63967710 | 64000710 |
| Base 11 | 3a766511 | 3a793511 |
| Base 12 | 26a22512 | 26a45b12 |
| Base 13 | 19520c13 | 19540413 |
| Base 14 | 12919314 | 12934b14 |
| Base 15 | c980215 | c997215 |
| Base 16 | 9c2bd16 | 9c40716 |