Compare 2011 vs 2012
| Property | 2011 | 2012 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 3 |
| Prime factorization | 20111 | 22 × 5031 |
| Prime factorization | 2011 | 2 × 2 × 503 |
| Divisors count | 2 | 6 |
| Divisors | 1, 2011 | 1, 2, 4, 503, 1006, 2012 |
| Number of properties | 4 | 0 |
| Harmonic primes | 113th | |
| Isolated primes | 184th | |
| Primes | 305th | |
| Sexy primes (1st member) | 130th | |
| Roman numberals | MMXI | MMXII |
| Base 2 | 111110110112 | 111110111002 |
| Base 3 | 22021113 | 22021123 |
| Base 4 | 1331234 | 1331304 |
| Base 5 | 310215 | 310225 |
| Base 6 | 131516 | 131526 |
| Base 7 | 56027 | 56037 |
| Base 8 | 37338 | 37348 |
| Base 9 | 26749 | 26759 |
| Base 10 | 201110 | 201210 |
| Base 11 | 156911 | 156a11 |
| Base 12 | 11b712 | 11b812 |
| Base 13 | bb913 | bba13 |
| Base 14 | a3914 | a3a14 |
| Base 15 | 8e115 | 8e215 |
| Base 16 | 7db16 | 7dc16 |