Compare 2011 vs 2019
| Property | 2011 | 2019 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 20111 | 31 × 6731 |
| Prime factorization | 2011 | 3 × 673 |
| Divisors count | 2 | 4 |
| Divisors | 1, 2011 | 1, 3, 673, 2019 |
| Number of properties | 4 | 1 |
| Harmonic primes | 113th | |
| Isolated primes | 184th | |
| Primes | 305th | |
| Semiprimes | 580th | |
| Sexy primes (1st member) | 130th | |
| Roman numberals | MMXI | MMXIX |
| Base 2 | 111110110112 | 111111000112 |
| Base 3 | 22021113 | 22022103 |
| Base 4 | 1331234 | 1332034 |
| Base 5 | 310215 | 310345 |
| Base 6 | 131516 | 132036 |
| Base 7 | 56027 | 56137 |
| Base 8 | 37338 | 37438 |
| Base 9 | 26749 | 26839 |
| Base 10 | 201110 | 201910 |
| Base 11 | 156911 | 157611 |
| Base 12 | 11b712 | 120312 |
| Base 13 | bb913 | bc413 |
| Base 14 | a3914 | a4314 |
| Base 15 | 8e115 | 8e915 |
| Base 16 | 7db16 | 7e316 |