Compare 1901 vs 2011
| Property | 1901 | 2011 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19011 | 20111 |
| Prime factorization | 1901 | 2011 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1901 | 1, 2011 |
| Number of properties | 11 | 4 |
| Additive primes | 154th | |
| Centered decagonal primes | 14th | |
| Chen primes | 179th | |
| Emirps | 92nd | |
| Harmonic primes | 106th | 113th |
| Isolated primes | 176th | 184th |
| Primes | 291st | 305th |
| Pythagorean primes | 141st | |
| Sexy primes (1st member) | 124th | 130th |
| Sexy prime triplets (1st member) | 49th | |
| Sophie germain primes | 58th | |
| Roman numberals | MCMI | MMXI |
| Base 2 | 111011011012 | 111110110112 |
| Base 3 | 21211023 | 22021113 |
| Base 4 | 1312314 | 1331234 |
| Base 5 | 301015 | 310215 |
| Base 6 | 124456 | 131516 |
| Base 7 | 53547 | 56027 |
| Base 8 | 35558 | 37338 |
| Base 9 | 25429 | 26749 |
| Base 10 | 190110 | 201110 |
| Base 11 | 147911 | 156911 |
| Base 12 | 112512 | 11b712 |
| Base 13 | b3313 | bb913 |
| Base 14 | 99b14 | a3914 |
| Base 15 | 86b15 | 8e115 |
| Base 16 | 76d16 | 7db16 |