Compare 639921 vs 639971
| Property | 639921 | 639971 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 2133071 | 6831 × 9371 |
| Prime factorization | 3 × 213307 | 683 × 937 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 213307, 639921 | 1, 683, 937, 639971 |
| Number of properties | 1 | 1 |
| Semiprimes | 137128th | 137140th |
| Roman numberals | ||
| Base 2 | 100111000011101100012 | 100111000011111000112 |
| Base 3 | 10121112102103 | 10121112121223 |
| Base 4 | 21300323014 | 21300332034 |
| Base 5 | 1304341415 | 1304343415 |
| Base 6 | 214143336 | 214144556 |
| Base 7 | 53034427 | 53035437 |
| Base 8 | 23416618 | 23417438 |
| Base 9 | 11747239 | 11747789 |
| Base 10 | 63992110 | 63997110 |
| Base 11 | 3a786711 | 3a790211 |
| Base 12 | 26a3a912 | 26a42b12 |
| Base 13 | 19536913 | 1953a713 |
| Base 14 | 1292c914 | 12932314 |
| Base 15 | c991615 | c994b15 |
| Base 16 | 9c3b116 | 9c3e316 |