Compare 642197 vs 643649
| Property | 642197 | 643649 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6421971 | 6436491 |
| Prime factorization | 642197 | 643649 |
| Divisors count | 2 | 2 |
| Divisors | 1, 642197 | 1, 643649 |
| Number of properties | 4 | 3 |
| Additive primes | 20415th | |
| Chen primes | 20434th | 20468th |
| Primes | 52236th | 52335th |
| Twin primes (1st member) | 5650th | 5657th |
| Roman numberals | ||
| Base 2 | 100111001100100101012 | 100111010010010000012 |
| Base 3 | 10121212210023 | 10122002202123 |
| Base 4 | 21303021114 | 21310210014 |
| Base 5 | 1310222425 | 1310440445 |
| Base 6 | 214330456 | 214435056 |
| Base 7 | 53132037 | 53203467 |
| Base 8 | 23462258 | 23511018 |
| Base 9 | 11778329 | 11808259 |
| Base 10 | 64219710 | 64364910 |
| Base 11 | 3a954611 | 3aa64611 |
| Base 12 | 26b78512 | 27059512 |
| Base 13 | 1963ca13 | 196c7613 |
| Base 14 | 12a07314 | 12a7cd14 |
| Base 15 | ca43215 | caa9e15 |
| Base 16 | 9cc9516 | 9d24116 |