Compare 640007 vs 640019
| Property | 640007 | 640019 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6400071 | 6400191 |
| Prime factorization | 640007 | 640019 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640007 | 1, 640019 |
| Number of properties | 5 | 4 |
| Additive primes | 20350th | |
| Chen primes | 20377th | 20379th |
| Isolated primes | 40814th | |
| Primes | 52075th | 52077th |
| Safe primes | 3016th | |
| Twin primes (1st member) | 5632nd | |
| Ulam primes | 3817th | |
| Roman numberals | ||
| Base 2 | 100111000100000001112 | 100111000100000100112 |
| Base 3 | 10121112202223 | 10121112211023 |
| Base 4 | 21301000134 | 21301001034 |
| Base 5 | 1304400125 | 1304400345 |
| Base 6 | 214145556 | 214150156 |
| Base 7 | 53036247 | 53036427 |
| Base 8 | 23420078 | 23420238 |
| Base 9 | 11748289 | 11748429 |
| Base 10 | 64000710 | 64001910 |
| Base 11 | 3a793511 | 3a794611 |
| Base 12 | 26a45b12 | 26a46b12 |
| Base 13 | 19540413 | 19541313 |
| Base 14 | 12934b14 | 12935914 |
| Base 15 | c997215 | c997e15 |
| Base 16 | 9c40716 | 9c41316 |