Compare 642185 vs 642197
| Property | 642185 | 642197 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 1284371 | 6421971 |
| Prime factorization | 5 × 128437 | 642197 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 128437, 642185 | 1, 642197 |
| Number of properties | 1 | 4 |
| Additive primes | 20415th | |
| Chen primes | 20434th | |
| Primes | 52236th | |
| Semiprimes | 137592nd | |
| Twin primes (1st member) | 5650th | |
| Roman numberals | ||
| Base 2 | 100111001100100010012 | 100111001100100101012 |
| Base 3 | 10121212201223 | 10121212210023 |
| Base 4 | 21303020214 | 21303021114 |
| Base 5 | 1310222205 | 1310222425 |
| Base 6 | 214330256 | 214330456 |
| Base 7 | 53131557 | 53132037 |
| Base 8 | 23462118 | 23462258 |
| Base 9 | 11778189 | 11778329 |
| Base 10 | 64218510 | 64219710 |
| Base 11 | 3a953511 | 3a954611 |
| Base 12 | 26b77512 | 26b78512 |
| Base 13 | 1963bb13 | 1963ca13 |
| Base 14 | 12a06514 | 12a07314 |
| Base 15 | ca42515 | ca43215 |
| Base 16 | 9cc8916 | 9cc9516 |