Compare 642739 vs 642749
| Property | 642739 | 642749 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6427391 | 1071 × 60071 |
| Prime factorization | 642739 | 107 × 6007 |
| Divisors count | 2 | 4 |
| Divisors | 1, 642739 | 1, 107, 6007, 642749 |
| Number of properties | 4 | 1 |
| Additive primes | 20429th | |
| Primes | 52269th | |
| Semiprimes | 137725th | |
| Twin primes (2nd member) | 5653rd | |
| Ulam primes | 3833rd | |
| Roman numberals | ||
| Base 2 | 100111001110101100112 | 100111001110101111012 |
| Base 3 | 10121222000113 | 10121222001123 |
| Base 4 | 21303223034 | 21303223314 |
| Base 5 | 1310314245 | 1310314445 |
| Base 6 | 214353516 | 214354056 |
| Base 7 | 53146067 | 53146227 |
| Base 8 | 23472638 | 23472758 |
| Base 9 | 11786049 | 11786159 |
| Base 10 | 64273910 | 64274910 |
| Base 11 | 3a999911 | 3a99a811 |
| Base 12 | 26bb5712 | 26bb6512 |
| Base 13 | 19672613 | 19673313 |
| Base 14 | 12a33d14 | 12a34914 |
| Base 15 | ca69415 | ca69e15 |
| Base 16 | 9ceb316 | 9cebd16 |