Compare 1901 vs 2111
| Property | 1901 | 2111 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19011 | 21111 |
| Prime factorization | 1901 | 2111 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1901 | 1, 2111 |
| Number of properties | 11 | 8 |
| Additive primes | 154th | 166th |
| Centered decagonal primes | 14th | |
| Chen primes | 179th | 195th |
| Emirps | 92nd | |
| Happy primes | 58th | |
| Harmonic primes | 106th | 117th |
| Isolated primes | 176th | |
| Multiplicative primes | 18th | |
| Primes | 291st | 318th |
| Pythagorean primes | 141st | |
| Sexy primes (1st member) | 124th | |
| Sexy prime triplets (1st member) | 49th | |
| Solinas primes | 59th | |
| Sophie germain primes | 58th | |
| Twin primes (1st member) | 65th | |
| Roman numberals | MCMI | MMCXI |
| Base 2 | 111011011012 | 1000001111112 |
| Base 3 | 21211023 | 22200123 |
| Base 4 | 1312314 | 2003334 |
| Base 5 | 301015 | 314215 |
| Base 6 | 124456 | 134356 |
| Base 7 | 53547 | 61047 |
| Base 8 | 35558 | 40778 |
| Base 9 | 25429 | 28059 |
| Base 10 | 190110 | 211110 |
| Base 11 | 147911 | 164a11 |
| Base 12 | 112512 | 127b12 |
| Base 13 | b3313 | c6513 |
| Base 14 | 99b14 | aab14 |
| Base 15 | 86b15 | 95b15 |
| Base 16 | 76d16 | 83f16 |