Compare 639937 vs 640687
| Property | 639937 | 640687 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399371 | 6406871 |
| Prime factorization | 639937 | 640687 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639937 | 1, 640687 |
| Number of properties | 6 | 5 |
| Additive primes | 20347th | 20373rd |
| Cousin primes (1st member) | 5631st | 5637th |
| Good primes | 1986th | |
| Isolated primes | 40808th | 40852nd |
| Primes | 52069th | 52127th |
| Super primes | 5326th | 5330th |
| Roman numberals | ||
| Base 2 | 100111000011110000012 | 100111000110101011112 |
| Base 3 | 10121112111013 | 10121122120113 |
| Base 4 | 21300330014 | 21301222334 |
| Base 5 | 1304342225 | 1310002225 |
| Base 6 | 214144016 | 214220516 |
| Base 7 | 53034647 | 53056157 |
| Base 8 | 23417018 | 23432578 |
| Base 9 | 11747419 | 11757649 |
| Base 10 | 63993710 | 64068710 |
| Base 11 | 3a788111 | 3a83a311 |
| Base 12 | 26a40112 | 26a92712 |
| Base 13 | 19537c13 | 19580813 |
| Base 14 | 1292db14 | 1296b514 |
| Base 15 | c992715 | c9c7715 |
| Base 16 | 9c3c116 | 9c6af16 |