Compare 2017 vs 2021
| Property | 2017 | 2021 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 20171 | 431 × 471 |
| Prime factorization | 2017 | 43 × 47 |
| Divisors count | 2 | 4 |
| Divisors | 1, 2017 | 1, 43, 47, 2021 |
| Number of properties | 7 | 1 |
| Chen primes | 187th | |
| Isolated primes | 185th | |
| Long primes | 117th | |
| Primes | 306th | |
| Pythagorean primes | 148th | |
| Semiprimes | 581st | |
| Sexy primes (2nd member) | 130th | |
| Solinas primes | 54th | |
| Roman numberals | MMXVII | MMXXI |
| Base 2 | 111111000012 | 111111001012 |
| Base 3 | 22022013 | 22022123 |
| Base 4 | 1332014 | 1332114 |
| Base 5 | 310325 | 310415 |
| Base 6 | 132016 | 132056 |
| Base 7 | 56117 | 56157 |
| Base 8 | 37418 | 37458 |
| Base 9 | 26819 | 26859 |
| Base 10 | 201710 | 202110 |
| Base 11 | 157411 | 157811 |
| Base 12 | 120112 | 120512 |
| Base 13 | bc213 | bc613 |
| Base 14 | a4114 | a4514 |
| Base 15 | 8e715 | 8eb15 |
| Base 16 | 7e116 | 7e516 |