Compare 1913 vs 1922
| Property | 1913 | 1922 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 3 |
| Prime factorization | 19131 | 21 × 312 |
| Prime factorization | 1913 | 2 × 31 × 31 |
| Divisors count | 2 | 6 |
| Divisors | 1, 1913 | 1, 2, 31, 62, 961, 1922 |
| Number of properties | 9 | 0 |
| Chen primes | 181st | |
| Emirps | 93rd | |
| Isolated primes | 178th | |
| Long primes | 114th | |
| Primes | 293rd | |
| Pythagorean primes | 142nd | |
| Sexy primes (2nd member) | 125th | |
| Sexy prime triplets (3rd member) | 49th | |
| Super primes | 62nd | |
| Roman numberals | MCMXIII | MCMXXII |
| Base 2 | 111011110012 | 111100000102 |
| Base 3 | 21212123 | 21220123 |
| Base 4 | 1313214 | 1320024 |
| Base 5 | 301235 | 301425 |
| Base 6 | 125056 | 125226 |
| Base 7 | 54027 | 54147 |
| Base 8 | 35718 | 36028 |
| Base 9 | 25559 | 25659 |
| Base 10 | 191310 | 192210 |
| Base 11 | 148a11 | 149811 |
| Base 12 | 113512 | 114212 |
| Base 13 | b4213 | b4b13 |
| Base 14 | 9a914 | 9b414 |
| Base 15 | 87815 | 88215 |
| Base 16 | 77916 | 78216 |