Compare 640047 vs 640105
| Property | 640047 | 640105 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 2133491 | 51 × 1280211 |
| Prime factorization | 3 × 213349 | 5 × 128021 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 213349, 640047 | 1, 5, 128021, 640105 |
| Number of properties | 1 | 1 |
| Semiprimes | 137153rd | 137164th |
| Roman numberals | ||
| Base 2 | 100111000100001011112 | 100111000100011010012 |
| Base 3 | 10121112221103 | 10121120011213 |
| Base 4 | 21301002334 | 21301012214 |
| Base 5 | 1304401425 | 1304404105 |
| Base 6 | 214151036 | 214152416 |
| Base 7 | 53040127 | 53041247 |
| Base 8 | 23420578 | 23421518 |
| Base 9 | 11748739 | 11750479 |
| Base 10 | 64004710 | 64010510 |
| Base 11 | 3a797111 | 3a7a1411 |
| Base 12 | 26a49312 | 26a52112 |
| Base 13 | 19543513 | 19547b13 |
| Base 14 | 12937914 | 1293bb14 |
| Base 15 | c999c15 | c99da15 |
| Base 16 | 9c42f16 | 9c46916 |