Compare 1811 vs 1814
| Property | 1811 | 1814 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 18111 | 21 × 9071 |
| Prime factorization | 1811 | 2 × 907 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1811 | 1, 2, 907, 1814 |
| Number of properties | 8 | 1 |
| Additive primes | 149th | |
| Dihedral primes | 7th | |
| Emirps | 87th | |
| Harmonic primes | 100th | |
| Isolated primes | 169th | |
| Long primes | 109th | |
| Primes | 280th | |
| Semiprimes | 521st | |
| Sophie germain primes | 56th | |
| Roman numberals | MDCCCXI | MDCCCXIV |
| Base 2 | 111000100112 | 111000101102 |
| Base 3 | 21110023 | 21110123 |
| Base 4 | 1301034 | 1301124 |
| Base 5 | 242215 | 242245 |
| Base 6 | 122156 | 122226 |
| Base 7 | 51657 | 52017 |
| Base 8 | 34238 | 34268 |
| Base 9 | 24329 | 24359 |
| Base 10 | 181110 | 181410 |
| Base 11 | 13a711 | 13aa11 |
| Base 12 | 106b12 | 107212 |
| Base 13 | a9413 | a9713 |
| Base 14 | 93514 | 93814 |
| Base 15 | 80b15 | 80e15 |
| Base 16 | 71316 | 71616 |