Compare 639937 vs 643421
| Property | 639937 | 643421 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399371 | 6434211 |
| Prime factorization | 639937 | 643421 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639937 | 1, 643421 |
| Number of properties | 6 | 5 |
| Additive primes | 20347th | |
| Cousin primes (1st member) | 5631st | |
| Good primes | 1986th | 1994th |
| Happy primes | 7440th | |
| Isolated primes | 40808th | 41006th |
| Primes | 52069th | 52317th |
| Sophie germain primes | 5331st | |
| Super primes | 5326th | |
| Roman numberals | ||
| Base 2 | 100111000011110000012 | 100111010001010111012 |
| Base 3 | 10121112111013 | 10122001211023 |
| Base 4 | 21300330014 | 21310111314 |
| Base 5 | 1304342225 | 1310421415 |
| Base 6 | 214144016 | 214424456 |
| Base 7 | 53034647 | 53166027 |
| Base 8 | 23417018 | 23505358 |
| Base 9 | 11747419 | 11805429 |
| Base 10 | 63993710 | 64342110 |
| Base 11 | 3a788111 | 3aa45911 |
| Base 12 | 26a40112 | 27042512 |
| Base 13 | 19537c13 | 196b2c13 |
| Base 14 | 1292db14 | 12a6a914 |
| Base 15 | c992715 | ca99b15 |
| Base 16 | 9c3c116 | 9d15d16 |