Compare 640121 vs 640151
| Property | 640121 | 640151 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6401211 | 6401511 |
| Prime factorization | 640121 | 640151 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640121 | 1, 640151 |
| Number of properties | 4 | 5 |
| Additive primes | 20357th | |
| Chen primes | 20382nd | 20384th |
| Happy primes | 7414th | |
| Isolated primes | 40823rd | |
| Primes | 52086th | 52089th |
| Sexy primes (1st member) | 11286th | |
| Twin primes (1st member) | 5633rd | |
| Roman numberals | ||
| Base 2 | 100111000100011110012 | 100111000100100101112 |
| Base 3 | 10121120020123 | 10121120100223 |
| Base 4 | 21301013214 | 21301021134 |
| Base 5 | 1304404415 | 1304411015 |
| Base 6 | 214153056 | 214153556 |
| Base 7 | 53041467 | 53042217 |
| Base 8 | 23421718 | 23422278 |
| Base 9 | 11750659 | 11751089 |
| Base 10 | 64012110 | 64015110 |
| Base 11 | 3a7a2911 | 3a7a5611 |
| Base 12 | 26a53512 | 26a55b12 |
| Base 13 | 19549113 | 1954b513 |
| Base 14 | 1293cd14 | 12941114 |
| Base 15 | c99eb15 | c9a1b15 |
| Base 16 | 9c47916 | 9c49716 |