Compare 201911 vs 201913
| Property | 201911 | 201913 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2019111 | 191 × 106271 |
| Prime factorization | 201911 | 19 × 10627 |
| Divisors count | 2 | 4 |
| Divisors | 1, 201911 | 1, 19, 10627, 201913 |
| Number of properties | 4 | 1 |
| Chen primes | 7584th | |
| Cousin primes (2nd member) | 2153rd | |
| Isolated primes | 13794th | |
| Primes | 18139th | |
| Semiprimes | 45644th | |
| Roman numberals | ||
| Base 2 | 1100010100101101112 | 1100010100101110012 |
| Base 3 | 1010202220123 | 1010202220213 |
| Base 4 | 3011023134 | 3011023214 |
| Base 5 | 224301215 | 224301235 |
| Base 6 | 41544356 | 41544416 |
| Base 7 | 15004437 | 15004457 |
| Base 8 | 6122678 | 6122718 |
| Base 9 | 3368659 | 3368679 |
| Base 10 | 20191110 | 20191310 |
| Base 11 | 12877611 | 12877811 |
| Base 12 | 98a1b12 | 98a2112 |
| Base 13 | 70b9813 | 70b9a13 |
| Base 14 | 5382314 | 5382514 |
| Base 15 | 3ec5b15 | 3ec5d15 |
| Base 16 | 314b716 | 314b916 |