Compare 639971 vs 639981
| Property | 639971 | 639981 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 5 |
| Prime factorization | 6831 × 9371 | 34 × 79011 |
| Prime factorization | 683 × 937 | 3 × 3 × 3 × 3 × 7901 |
| Divisors count | 4 | 10 |
| Divisors | 1, 683, 937, 639971 | 1, 3, 9, 27, 81, 7901, 23703, 71109, 213327, 639981 |
| Number of properties | 1 | 0 |
| Semiprimes | 137140th | |
| Roman numberals | ||
| Base 2 | 100111000011111000112 | 100111000011111011012 |
| Base 3 | 10121112121223 | 10121112200003 |
| Base 4 | 21300332034 | 21300332314 |
| Base 5 | 1304343415 | 1304344115 |
| Base 6 | 214144556 | 214145136 |
| Base 7 | 53035437 | 53035567 |
| Base 8 | 23417438 | 23417558 |
| Base 9 | 11747789 | 11748009 |
| Base 10 | 63997110 | 63998110 |
| Base 11 | 3a790211 | 3a791111 |
| Base 12 | 26a42b12 | 26a43912 |
| Base 13 | 1953a713 | 1953b413 |
| Base 14 | 12932314 | 12932d14 |
| Base 15 | c994b15 | c995615 |
| Base 16 | 9c3e316 | 9c3ed16 |