Compare 640989 vs 640997
| Property | 640989 | 640997 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 32 × 671 × 10631 | 71 × 915711 |
| Prime factorization | 3 × 3 × 67 × 1063 | 7 × 91571 |
| Divisors count | 12 | 4 |
| Divisors | 1, 3, 9, 67, 201, 603, 1063, 3189, 9567, 71221, 213663, 640989 | 1, 7, 91571, 640997 |
| Number of properties | 0 | 1 |
| Semiprimes | 137348th | |
| Roman numberals | ||
| Base 2 | 100111000111110111012 | 100111000111111001012 |
| Base 3 | 10121200211003 | 10121200211223 |
| Base 4 | 21301331314 | 21301332114 |
| Base 5 | 1310024245 | 1310024425 |
| Base 6 | 214233136 | 214233256 |
| Base 7 | 53065267 | 53065407 |
| Base 8 | 23437358 | 23437458 |
| Base 9 | 11762409 | 11762489 |
| Base 10 | 64098910 | 64099710 |
| Base 11 | 3a864811 | 3a865511 |
| Base 12 | 26ab3912 | 26ab4512 |
| Base 13 | 1959ab13 | 1959b613 |
| Base 14 | 12984d14 | 12985714 |
| Base 15 | c9dc915 | c9dd215 |
| Base 16 | 9c7dd16 | 9c7e516 |