Compare 640973 vs 640981
| Property | 640973 | 640981 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6409731 | 111 × 582711 |
| Prime factorization | 640973 | 11 × 58271 |
| Divisors count | 2 | 4 |
| Divisors | 1, 640973 | 1, 11, 58271, 640981 |
| Number of properties | 4 | 1 |
| Additive primes | 20380th | |
| Isolated primes | 40875th | |
| Primes | 52150th | |
| Semiprimes | 137346th | |
| Sexy primes (2nd member) | 11301st | |
| Roman numberals | ||
| Base 2 | 100111000111110011012 | 100111000111110101012 |
| Base 3 | 10121200202023 | 10121200210013 |
| Base 4 | 21301330314 | 21301331114 |
| Base 5 | 1310023435 | 1310024115 |
| Base 6 | 214232456 | 214233016 |
| Base 7 | 53065047 | 53065157 |
| Base 8 | 23437158 | 23437258 |
| Base 9 | 11762229 | 11762319 |
| Base 10 | 64097310 | 64098110 |
| Base 11 | 3a863311 | 3a864011 |
| Base 12 | 26ab2512 | 26ab3112 |
| Base 13 | 19599813 | 1959a313 |
| Base 14 | 12983b14 | 12984514 |
| Base 15 | c9db815 | c9dc115 |
| Base 16 | 9c7cd16 | 9c7d516 |