Compare 639937 vs 640019
| Property | 639937 | 640019 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399371 | 6400191 |
| Prime factorization | 639937 | 640019 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639937 | 1, 640019 |
| Number of properties | 6 | 4 |
| Additive primes | 20347th | |
| Chen primes | 20379th | |
| Cousin primes (1st member) | 5631st | |
| Good primes | 1986th | |
| Isolated primes | 40808th | 40814th |
| Primes | 52069th | 52077th |
| Safe primes | 3016th | |
| Super primes | 5326th | |
| Roman numberals | ||
| Base 2 | 100111000011110000012 | 100111000100000100112 |
| Base 3 | 10121112111013 | 10121112211023 |
| Base 4 | 21300330014 | 21301001034 |
| Base 5 | 1304342225 | 1304400345 |
| Base 6 | 214144016 | 214150156 |
| Base 7 | 53034647 | 53036427 |
| Base 8 | 23417018 | 23420238 |
| Base 9 | 11747419 | 11748429 |
| Base 10 | 63993710 | 64001910 |
| Base 11 | 3a788111 | 3a794611 |
| Base 12 | 26a40112 | 26a46b12 |
| Base 13 | 19537c13 | 19541313 |
| Base 14 | 1292db14 | 12935914 |
| Base 15 | c992715 | c997e15 |
| Base 16 | 9c3c116 | 9c41316 |