Compare 642001 vs 642009
| Property | 642001 | 642009 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 4011 × 16011 | 31 × 2140031 |
| Prime factorization | 401 × 1601 | 3 × 214003 |
| Divisors count | 4 | 4 |
| Divisors | 1, 401, 1601, 642001 | 1, 3, 214003, 642009 |
| Number of properties | 1 | 1 |
| Semiprimes | 137550th | 137552nd |
| Roman numberals | ||
| Base 2 | 100111001011110100012 | 100111001011110110012 |
| Base 3 | 10121211222113 | 10121212000103 |
| Base 4 | 21302331014 | 21302331214 |
| Base 5 | 1310210015 | 1310210145 |
| Base 6 | 214321216 | 214321336 |
| Base 7 | 53125037 | 53125147 |
| Base 8 | 23457218 | 23457318 |
| Base 9 | 11775849 | 11776039 |
| Base 10 | 64200110 | 64200910 |
| Base 11 | 3a938811 | 3a939511 |
| Base 12 | 26b64112 | 26b64912 |
| Base 13 | 1962a913 | 1962b413 |
| Base 14 | 129d7314 | 129d7b14 |
| Base 15 | ca35115 | ca35915 |
| Base 16 | 9cbd116 | 9cbd916 |