Compare 642001 vs 642005
| Property | 642001 | 642005 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 5 |
| Total factors | 2 | 5 |
| Prime factorization | 4011 × 16011 | 51 × 71 × 131 × 171 × 831 |
| Prime factorization | 401 × 1601 | 5 × 7 × 13 × 17 × 83 |
| Divisors count | 4 | 32 |
| Divisors | 1, 401, 1601, 642001 | 1, 5, 7, 13, 17, 35, 65, 83, 85, 91, 119, 221, 415, 455, 581, 595, 1079, 1105, 1411, 1547, 2905, 5395, 7055, 7553, 7735, 9877, 18343, 37765, 49385, 91715, 128401, 642005 |
| Number of properties | 1 | 0 |
| Semiprimes | 137550th | |
| Roman numberals | ||
| Base 2 | 100111001011110100012 | 100111001011110101012 |
| Base 3 | 10121211222113 | 10121211222223 |
| Base 4 | 21302331014 | 21302331114 |
| Base 5 | 1310210015 | 1310210105 |
| Base 6 | 214321216 | 214321256 |
| Base 7 | 53125037 | 53125107 |
| Base 8 | 23457218 | 23457258 |
| Base 9 | 11775849 | 11775889 |
| Base 10 | 64200110 | 64200510 |
| Base 11 | 3a938811 | 3a939111 |
| Base 12 | 26b64112 | 26b64512 |
| Base 13 | 1962a913 | 1962b013 |
| Base 14 | 129d7314 | 129d7714 |
| Base 15 | ca35115 | ca35515 |
| Base 16 | 9cbd116 | 9cbd516 |