Compare 1913 vs 1949
| Property | 1913 | 1949 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19131 | 19491 |
| Prime factorization | 1913 | 1949 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1913 | 1, 1949 |
| Number of properties | 9 | 8 |
| Additive primes | 156th | |
| Chen primes | 181st | 183rd |
| Emirps | 93rd | 95th |
| Harmonic primes | 110th | |
| Isolated primes | 178th | |
| Long primes | 114th | 115th |
| Primes | 293rd | 296th |
| Pythagorean primes | 142nd | 144th |
| Sexy primes (2nd member) | 125th | |
| Sexy prime triplets (3rd member) | 49th | |
| Super primes | 62nd | |
| Twin primes (1st member) | 60th | |
| Roman numberals | MCMXIII | MCMXLIX |
| Base 2 | 111011110012 | 111100111012 |
| Base 3 | 21212123 | 22000123 |
| Base 4 | 1313214 | 1321314 |
| Base 5 | 301235 | 302445 |
| Base 6 | 125056 | 130056 |
| Base 7 | 54027 | 54537 |
| Base 8 | 35718 | 36358 |
| Base 9 | 25559 | 26059 |
| Base 10 | 191310 | 194910 |
| Base 11 | 148a11 | 151211 |
| Base 12 | 113512 | 116512 |
| Base 13 | b4213 | b6c13 |
| Base 14 | 9a914 | 9d314 |
| Base 15 | 87815 | 89e15 |
| Base 16 | 77916 | 79d16 |