Compare 642121 vs 642197
| Property | 642121 | 642197 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6421211 | 6421971 |
| Prime factorization | 642121 | 642197 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642121 | 1, 642197 |
| Number of properties | 2 | 4 |
| Additive primes | 20415th | |
| Chen primes | 20434th | |
| Isolated primes | 40935th | |
| Primes | 52230th | 52236th |
| Twin primes (1st member) | 5650th | |
| Roman numberals | ||
| Base 2 | 100111001100010010012 | 100111001100100101012 |
| Base 3 | 10121212110213 | 10121212210023 |
| Base 4 | 21303010214 | 21303021114 |
| Base 5 | 1310214415 | 1310222425 |
| Base 6 | 214324416 | 214330456 |
| Base 7 | 53130347 | 53132037 |
| Base 8 | 23461118 | 23462258 |
| Base 9 | 11777379 | 11778329 |
| Base 10 | 64212110 | 64219710 |
| Base 11 | 3a948711 | 3a954611 |
| Base 12 | 26b72112 | 26b78512 |
| Base 13 | 19636c13 | 1963ca13 |
| Base 14 | 12a01b14 | 12a07314 |
| Base 15 | ca3d115 | ca43215 |
| Base 16 | 9cc4916 | 9cc9516 |