Compare 1021 vs 1109
| Property | 1021 | 1109 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 10211 | 11091 |
| Prime factorization | 1021 | 1109 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1021 | 1, 1109 |
| Number of properties | 8 | 11 |
| Additive primes | 100th | |
| Chen primes | 124th | |
| Emirps | 38th | 46th |
| Harmonic primes | 61st | 67th |
| Isolated primes | 107th | |
| Long primes | 62nd | 71st |
| Lucky primes | 45th | |
| Primes | 172nd | 186th |
| Pythagorean primes | 83rd | 90th |
| Sexy primes (2nd member) | 81st | |
| Sexy prime quadrupletss (4th member) | 8th | |
| Sexy prime triplets (3rd member) | 30th | |
| Solinas primes | 46th | |
| Twin primes (2nd member) | 36th | |
| Roman numberals | MXXI | MCIX |
| Base 2 | 11111111012 | 100010101012 |
| Base 3 | 11012113 | 11120023 |
| Base 4 | 333314 | 1011114 |
| Base 5 | 130415 | 134145 |
| Base 6 | 44216 | 50456 |
| Base 7 | 26567 | 31437 |
| Base 8 | 17758 | 21258 |
| Base 9 | 13549 | 14629 |
| Base 10 | 102110 | 110910 |
| Base 11 | 84911 | 91911 |
| Base 12 | 71112 | 78512 |
| Base 13 | 60713 | 67413 |
| Base 14 | 52d14 | 59314 |
| Base 15 | 48115 | 4de15 |
| Base 16 | 3fd16 | 45516 |