Compare 640667 vs 642197
| Property | 640667 | 642197 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6406671 | 6421971 |
| Prime factorization | 640667 | 642197 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640667 | 1, 642197 |
| Number of properties | 6 | 4 |
| Additive primes | 20371st | 20415th |
| Chen primes | 20395th | 20434th |
| Cousin primes (2nd member) | 5636th | |
| Primes | 52125th | 52236th |
| Prime triplets (2nd member) | 2063rd | |
| Twin primes (1st member) | 5638th | 5650th |
| Roman numberals | ||
| Base 2 | 100111000110100110112 | 100111001100100101012 |
| Base 3 | 10121122111023 | 10121212210023 |
| Base 4 | 21301221234 | 21303021114 |
| Base 5 | 1310001325 | 1310222425 |
| Base 6 | 214220156 | 214330456 |
| Base 7 | 53055567 | 53132037 |
| Base 8 | 23432338 | 23462258 |
| Base 9 | 11757429 | 11778329 |
| Base 10 | 64066710 | 64219710 |
| Base 11 | 3a838511 | 3a954611 |
| Base 12 | 26a90b12 | 26b78512 |
| Base 13 | 1957c113 | 1963ca13 |
| Base 14 | 12969d14 | 12a07314 |
| Base 15 | c9c6215 | ca43215 |
| Base 16 | 9c69b16 | 9cc9516 |