Compare 640019 vs 640151
| Property | 640019 | 640151 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6400191 | 6401511 |
| Prime factorization | 640019 | 640151 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640019 | 1, 640151 |
| Number of properties | 4 | 5 |
| Additive primes | 20357th | |
| Chen primes | 20379th | 20384th |
| Happy primes | 7414th | |
| Isolated primes | 40814th | |
| Primes | 52077th | 52089th |
| Safe primes | 3016th | |
| Twin primes (1st member) | 5633rd | |
| Roman numberals | ||
| Base 2 | 100111000100000100112 | 100111000100100101112 |
| Base 3 | 10121112211023 | 10121120100223 |
| Base 4 | 21301001034 | 21301021134 |
| Base 5 | 1304400345 | 1304411015 |
| Base 6 | 214150156 | 214153556 |
| Base 7 | 53036427 | 53042217 |
| Base 8 | 23420238 | 23422278 |
| Base 9 | 11748429 | 11751089 |
| Base 10 | 64001910 | 64015110 |
| Base 11 | 3a794611 | 3a7a5611 |
| Base 12 | 26a46b12 | 26a55b12 |
| Base 13 | 19541313 | 1954b513 |
| Base 14 | 12935914 | 12941114 |
| Base 15 | c997e15 | c9a1b15 |
| Base 16 | 9c41316 | 9c49716 |