Compare 1820 vs 1829
| Property | 1820 | 1829 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 4 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 22 × 51 × 71 × 131 | 311 × 591 |
| Prime factorization | 2 × 2 × 5 × 7 × 13 | 31 × 59 |
| Divisors count | 24 | 4 |
| Divisors | 1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820 | 1, 31, 59, 1829 |
| Number of properties | 0 | 1 |
| Semiprimes | 526th | |
| Roman numberals | MDCCCXX | MDCCCXXIX |
| Base 2 | 111000111002 | 111001001012 |
| Base 3 | 21111023 | 21112023 |
| Base 4 | 1301304 | 1302114 |
| Base 5 | 242405 | 243045 |
| Base 6 | 122326 | 122456 |
| Base 7 | 52107 | 52227 |
| Base 8 | 34348 | 34458 |
| Base 9 | 24429 | 24529 |
| Base 10 | 182010 | 182910 |
| Base 11 | 140511 | 141311 |
| Base 12 | 107812 | 108512 |
| Base 13 | aa013 | aa913 |
| Base 14 | 94014 | 94914 |
| Base 15 | 81515 | 81e15 |
| Base 16 | 71c16 | 72516 |