Compare 1821 vs 1829
| Property | 1821 | 1829 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 6071 | 311 × 591 |
| Prime factorization | 3 × 607 | 31 × 59 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 607, 1821 | 1, 31, 59, 1829 |
| Number of properties | 1 | 1 |
| Semiprimes | 524th | 526th |
| Roman numberals | MDCCCXXI | MDCCCXXIX |
| Base 2 | 111000111012 | 111001001012 |
| Base 3 | 21111103 | 21112023 |
| Base 4 | 1301314 | 1302114 |
| Base 5 | 242415 | 243045 |
| Base 6 | 122336 | 122456 |
| Base 7 | 52117 | 52227 |
| Base 8 | 34358 | 34458 |
| Base 9 | 24439 | 24529 |
| Base 10 | 182110 | 182910 |
| Base 11 | 140611 | 141311 |
| Base 12 | 107912 | 108512 |
| Base 13 | aa113 | aa913 |
| Base 14 | 94114 | 94914 |
| Base 15 | 81615 | 81e15 |
| Base 16 | 71d16 | 72516 |