Compare 1815 vs 1821
Property | 1815 | 1821 |
---|---|---|
Type | composite number | semiprime |
Unique factors | 3 | 2 |
Total factors | 4 | 2 |
Prime factorization | 31 × 51 × 112 | 31 × 6071 |
Prime factorization | 3 × 5 × 11 × 11 | 3 × 607 |
Divisors count | 12 | 4 |
Divisors | 1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815 | 1, 3, 607, 1821 |
Number of properties | 0 | 1 |
Semiprimes | 524th | |
Roman numberals | MDCCCXV | MDCCCXXI |
Base 2 | 111000101112 | 111000111012 |
Base 3 | 21110203 | 21111103 |
Base 4 | 1301134 | 1301314 |
Base 5 | 242305 | 242415 |
Base 6 | 122236 | 122336 |
Base 7 | 52027 | 52117 |
Base 8 | 34278 | 34358 |
Base 9 | 24369 | 24439 |
Base 10 | 181510 | 182110 |
Base 11 | 140011 | 140611 |
Base 12 | 107312 | 107912 |
Base 13 | a9813 | aa113 |
Base 14 | 93914 | 94114 |
Base 15 | 81015 | 81615 |
Base 16 | 71716 | 71d16 |