Compare 640223 vs 640234
| Property | 640223 | 640234 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 5 |
| Prime factorization | 6402231 | 21 × 72 × 471 × 1391 |
| Prime factorization | 640223 | 2 × 7 × 7 × 47 × 139 |
| Divisors count | 2 | 24 |
| Divisors | 1, 640223 | 1, 2, 7, 14, 47, 49, 94, 98, 139, 278, 329, 658, 973, 1946, 2303, 4606, 6533, 6811, 13066, 13622, 45731, 91462, 320117, 640234 |
| Number of properties | 5 | 0 |
| Additive primes | 20360th | |
| Cousin primes (2nd member) | 5633rd | |
| Isolated primes | 40829th | |
| Primes | 52094th | |
| Sexy primes (1st member) | 11287th | |
| Roman numberals | ||
| Base 2 | 100111000100110111112 | 100111000100111010102 |
| Base 3 | 10121120122223 | 10121120201013 |
| Base 4 | 21301031334 | 21301032224 |
| Base 5 | 1304413435 | 1304414145 |
| Base 6 | 214155556 | 214200146 |
| Base 7 | 53043537 | 53044007 |
| Base 8 | 23423378 | 23423528 |
| Base 9 | 11751889 | 11752119 |
| Base 10 | 64022310 | 64023410 |
| Base 11 | 3a801111 | 3a802111 |
| Base 12 | 26a5bb12 | 26a60a12 |
| Base 13 | 19553c13 | 19554a13 |
| Base 14 | 12946314 | 12947014 |
| Base 15 | c9a6815 | c9a7415 |
| Base 16 | 9c4df16 | 9c4ea16 |