Compare 642739 vs 642751
| Property | 642739 | 642751 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6427391 | 191 × 338291 |
| Prime factorization | 642739 | 19 × 33829 |
| Divisors count | 2 | 4 |
| Divisors | 1, 642739 | 1, 19, 33829, 642751 |
| Number of properties | 4 | 1 |
| Additive primes | 20429th | |
| Primes | 52269th | |
| Semiprimes | 137726th | |
| Twin primes (2nd member) | 5653rd | |
| Ulam primes | 3833rd | |
| Roman numberals | ||
| Base 2 | 100111001110101100112 | 100111001110101111112 |
| Base 3 | 10121222000113 | 10121222001213 |
| Base 4 | 21303223034 | 21303223334 |
| Base 5 | 1310314245 | 1310320015 |
| Base 6 | 214353516 | 214354116 |
| Base 7 | 53146067 | 53146247 |
| Base 8 | 23472638 | 23472778 |
| Base 9 | 11786049 | 11786179 |
| Base 10 | 64273910 | 64275110 |
| Base 11 | 3a999911 | 3a99aa11 |
| Base 12 | 26bb5712 | 26bb6712 |
| Base 13 | 19672613 | 19673513 |
| Base 14 | 12a33d14 | 12a34b14 |
| Base 15 | ca69415 | ca6a115 |
| Base 16 | 9ceb316 | 9cebf16 |