Compare 1021 vs 1027
| Property | 1021 | 1027 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 10211 | 131 × 791 |
| Prime factorization | 1021 | 13 × 79 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1021 | 1, 13, 79, 1027 |
| Number of properties | 8 | 1 |
| Emirps | 38th | |
| Harmonic primes | 61st | |
| Long primes | 62nd | |
| Lucky primes | 45th | |
| Primes | 172nd | |
| Pythagorean primes | 83rd | |
| Semiprimes | 305th | |
| Solinas primes | 46th | |
| Twin primes (2nd member) | 36th | |
| Roman numberals | MXXI | MXXVII |
| Base 2 | 11111111012 | 100000000112 |
| Base 3 | 11012113 | 11020013 |
| Base 4 | 333314 | 1000034 |
| Base 5 | 130415 | 131025 |
| Base 6 | 44216 | 44316 |
| Base 7 | 26567 | 26657 |
| Base 8 | 17758 | 20038 |
| Base 9 | 13549 | 13619 |
| Base 10 | 102110 | 102710 |
| Base 11 | 84911 | 85411 |
| Base 12 | 71112 | 71712 |
| Base 13 | 60713 | 61013 |
| Base 14 | 52d14 | 53514 |
| Base 15 | 48115 | 48715 |
| Base 16 | 3fd16 | 40316 |