Compare 642419 vs 642421
| Property | 642419 | 642421 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6424191 | 131 × 494171 |
| Prime factorization | 642419 | 13 × 49417 |
| Divisors count | 2 | 4 |
| Divisors | 1, 642419 | 1, 13, 49417, 642421 |
| Number of properties | 3 | 1 |
| Chen primes | 20438th | |
| Isolated primes | 40950th | |
| Primes | 52251st | |
| Semiprimes | 137645th | |
| Roman numberals | ||
| Base 2 | 100111001101011100112 | 100111001101011101012 |
| Base 3 | 10121220200223 | 10121220201013 |
| Base 4 | 21303113034 | 21303113114 |
| Base 5 | 1310241345 | 1310241415 |
| Base 6 | 214340556 | 214341016 |
| Base 7 | 53136417 | 53136437 |
| Base 8 | 23465638 | 23465658 |
| Base 9 | 11782089 | 11782119 |
| Base 10 | 64241910 | 64242110 |
| Base 11 | 3a972811 | 3a972a11 |
| Base 12 | 26b92b12 | 26b93112 |
| Base 13 | 19653b13 | 19654013 |
| Base 14 | 12a19114 | 12a19314 |
| Base 15 | ca52e15 | ca53115 |
| Base 16 | 9cd7316 | 9cd7516 |