Compare 1811 vs 2129
| Property | 1811 | 2129 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18111 | 21291 |
| Prime factorization | 1811 | 2129 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1811 | 1, 2129 |
| Number of properties | 8 | 5 |
| Additive primes | 149th | |
| Chen primes | 196th | |
| Dihedral primes | 7th | |
| Emirps | 87th | |
| Harmonic primes | 100th | |
| Isolated primes | 169th | |
| Long primes | 109th | |
| Primes | 280th | 320th |
| Pythagorean primes | 155th | |
| Sophie germain primes | 56th | 65th |
| Twin primes (1st member) | 66th | |
| Roman numberals | MDCCCXI | MMCXXIX |
| Base 2 | 111000100112 | 1000010100012 |
| Base 3 | 21110023 | 22202123 |
| Base 4 | 1301034 | 2011014 |
| Base 5 | 242215 | 320045 |
| Base 6 | 122156 | 135056 |
| Base 7 | 51657 | 61317 |
| Base 8 | 34238 | 41218 |
| Base 9 | 24329 | 28259 |
| Base 10 | 181110 | 212910 |
| Base 11 | 13a711 | 166611 |
| Base 12 | 106b12 | 129512 |
| Base 13 | a9413 | c7a13 |
| Base 14 | 93514 | ac114 |
| Base 15 | 80b15 | 96e15 |
| Base 16 | 71316 | 85116 |