Compare 639986 vs 640063
| Property | 639986 | 640063 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 3199931 | 371 × 172991 |
| Prime factorization | 2 × 319993 | 37 × 17299 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 319993, 639986 | 1, 37, 17299, 640063 |
| Number of properties | 1 | 1 |
| Semiprimes | 137144th | 137155th |
| Roman numberals | ||
| Base 2 | 100111000011111100102 | 100111000100001111112 |
| Base 3 | 10121112200123 | 10121120000013 |
| Base 4 | 21300333024 | 21301003334 |
| Base 5 | 1304344215 | 1304402235 |
| Base 6 | 214145226 | 214151316 |
| Base 7 | 53035647 | 53040347 |
| Base 8 | 23417628 | 23420778 |
| Base 9 | 11748059 | 11750019 |
| Base 10 | 63998610 | 64006310 |
| Base 11 | 3a791611 | 3a798611 |
| Base 12 | 26a44212 | 26a4a712 |
| Base 13 | 1953b913 | 19544813 |
| Base 14 | 12933414 | 12938b14 |
| Base 15 | c995b15 | c99ad15 |
| Base 16 | 9c3f216 | 9c43f16 |