Compare 1851 vs 1865
| Property | 1851 | 1865 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 6171 | 51 × 3731 |
| Prime factorization | 3 × 617 | 5 × 373 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 617, 1851 | 1, 5, 373, 1865 |
| Number of properties | 1 | 1 |
| Semiprimes | 534th | 538th |
| Roman numberals | MDCCCLI | MDCCCLXV |
| Base 2 | 111001110112 | 111010010012 |
| Base 3 | 21121203 | 21200023 |
| Base 4 | 1303234 | 1310214 |
| Base 5 | 244015 | 244305 |
| Base 6 | 123236 | 123456 |
| Base 7 | 52537 | 53037 |
| Base 8 | 34738 | 35118 |
| Base 9 | 24769 | 25029 |
| Base 10 | 185110 | 186510 |
| Base 11 | 143311 | 144611 |
| Base 12 | 10a312 | 10b512 |
| Base 13 | ac513 | b0613 |
| Base 14 | 96314 | 97314 |
| Base 15 | 83615 | 84515 |
| Base 16 | 73b16 | 74916 |