Compare 1845 vs 1851
| Property | 1845 | 1851 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 32 × 51 × 411 | 31 × 6171 |
| Prime factorization | 3 × 3 × 5 × 41 | 3 × 617 |
| Divisors count | 12 | 4 |
| Divisors | 1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845 | 1, 3, 617, 1851 |
| Number of properties | 0 | 1 |
| Semiprimes | 534th | |
| Roman numberals | MDCCCXLV | MDCCCLI |
| Base 2 | 111001101012 | 111001110112 |
| Base 3 | 21121003 | 21121203 |
| Base 4 | 1303114 | 1303234 |
| Base 5 | 243405 | 244015 |
| Base 6 | 123136 | 123236 |
| Base 7 | 52447 | 52537 |
| Base 8 | 34658 | 34738 |
| Base 9 | 24709 | 24769 |
| Base 10 | 184510 | 185110 |
| Base 11 | 142811 | 143311 |
| Base 12 | 109912 | 10a312 |
| Base 13 | abc13 | ac513 |
| Base 14 | 95b14 | 96314 |
| Base 15 | 83015 | 83615 |
| Base 16 | 73516 | 73b16 |