Compare 640147 vs 640151
| Property | 640147 | 640151 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 2771 × 23111 | 6401511 |
| Prime factorization | 277 × 2311 | 640151 |
| Divisors count | 4 | 2 |
| Divisors | 1, 277, 2311, 640147 | 1, 640151 |
| Number of properties | 1 | 5 |
| Additive primes | 20357th | |
| Chen primes | 20384th | |
| Happy primes | 7414th | |
| Primes | 52089th | |
| Semiprimes | 137172nd | |
| Twin primes (1st member) | 5633rd | |
| Roman numberals | ||
| Base 2 | 100111000100100100112 | 100111000100100101112 |
| Base 3 | 10121120100113 | 10121120100223 |
| Base 4 | 21301021034 | 21301021134 |
| Base 5 | 1304410425 | 1304411015 |
| Base 6 | 214153516 | 214153556 |
| Base 7 | 53042147 | 53042217 |
| Base 8 | 23422238 | 23422278 |
| Base 9 | 11751049 | 11751089 |
| Base 10 | 64014710 | 64015110 |
| Base 11 | 3a7a5211 | 3a7a5611 |
| Base 12 | 26a55712 | 26a55b12 |
| Base 13 | 1954b113 | 1954b513 |
| Base 14 | 12940b14 | 12941114 |
| Base 15 | c9a1715 | c9a1b15 |
| Base 16 | 9c49316 | 9c49716 |