Compare 1813 vs 1819
| Property | 1813 | 1819 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 72 × 371 | 171 × 1071 |
| Prime factorization | 7 × 7 × 37 | 17 × 107 |
| Divisors count | 6 | 4 |
| Divisors | 1, 7, 37, 49, 259, 1813 | 1, 17, 107, 1819 |
| Number of properties | 0 | 1 |
| Semiprimes | 523rd | |
| Roman numberals | MDCCCXIII | MDCCCXIX |
| Base 2 | 111000101012 | 111000110112 |
| Base 3 | 21110113 | 21111013 |
| Base 4 | 1301114 | 1301234 |
| Base 5 | 242235 | 242345 |
| Base 6 | 122216 | 122316 |
| Base 7 | 52007 | 52067 |
| Base 8 | 34258 | 34338 |
| Base 9 | 24349 | 24419 |
| Base 10 | 181310 | 181910 |
| Base 11 | 13a911 | 140411 |
| Base 12 | 107112 | 107712 |
| Base 13 | a9613 | a9c13 |
| Base 14 | 93714 | 93d14 |
| Base 15 | 80d15 | 81415 |
| Base 16 | 71516 | 71b16 |