Compare 642145 vs 642153
| Property | 642145 | 642153 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 51 × 72 × 26211 | 31 × 2140511 |
| Prime factorization | 5 × 7 × 7 × 2621 | 3 × 214051 |
| Divisors count | 12 | 4 |
| Divisors | 1, 5, 7, 35, 49, 245, 2621, 13105, 18347, 91735, 128429, 642145 | 1, 3, 214051, 642153 |
| Number of properties | 0 | 1 |
| Semiprimes | 137585th | |
| Roman numberals | ||
| Base 2 | 100111001100011000012 | 100111001100011010012 |
| Base 3 | 10121212120113 | 10121212121103 |
| Base 4 | 21303012014 | 21303012214 |
| Base 5 | 1310220405 | 1310221035 |
| Base 6 | 214325216 | 214325336 |
| Base 7 | 53131007 | 53131117 |
| Base 8 | 23461418 | 23461518 |
| Base 9 | 11777649 | 11777739 |
| Base 10 | 64214510 | 64215310 |
| Base 11 | 3a94a911 | 3a950611 |
| Base 12 | 26b74112 | 26b74912 |
| Base 13 | 19638a13 | 19639513 |
| Base 14 | 12a03714 | 12a04114 |
| Base 15 | ca3ea15 | ca40315 |
| Base 16 | 9cc6116 | 9cc6916 |