Compare 642001 vs 642007
| Property | 642001 | 642007 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 4011 × 16011 | 1811 × 35471 |
| Prime factorization | 401 × 1601 | 181 × 3547 |
| Divisors count | 4 | 4 |
| Divisors | 1, 401, 1601, 642001 | 1, 181, 3547, 642007 |
| Number of properties | 1 | 1 |
| Semiprimes | 137550th | 137551st |
| Roman numberals | ||
| Base 2 | 100111001011110100012 | 100111001011110101112 |
| Base 3 | 10121211222113 | 10121212000013 |
| Base 4 | 21302331014 | 21302331134 |
| Base 5 | 1310210015 | 1310210125 |
| Base 6 | 214321216 | 214321316 |
| Base 7 | 53125037 | 53125127 |
| Base 8 | 23457218 | 23457278 |
| Base 9 | 11775849 | 11776019 |
| Base 10 | 64200110 | 64200710 |
| Base 11 | 3a938811 | 3a939311 |
| Base 12 | 26b64112 | 26b64712 |
| Base 13 | 1962a913 | 1962b213 |
| Base 14 | 129d7314 | 129d7914 |
| Base 15 | ca35115 | ca35715 |
| Base 16 | 9cbd116 | 9cbd716 |