Compare 1021 vs 1023
| Property | 1021 | 1023 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 10211 | 31 × 111 × 311 |
| Prime factorization | 1021 | 3 × 11 × 31 |
| Divisors count | 2 | 8 |
| Divisors | 1, 1021 | 1, 3, 11, 31, 33, 93, 341, 1023 |
| Number of properties | 8 | 0 |
| Emirps | 38th | |
| Harmonic primes | 61st | |
| Long primes | 62nd | |
| Lucky primes | 45th | |
| Primes | 172nd | |
| Pythagorean primes | 83rd | |
| Solinas primes | 46th | |
| Twin primes (2nd member) | 36th | |
| Roman numberals | MXXI | MXXIII |
| Base 2 | 11111111012 | 11111111112 |
| Base 3 | 11012113 | 11012203 |
| Base 4 | 333314 | 333334 |
| Base 5 | 130415 | 130435 |
| Base 6 | 44216 | 44236 |
| Base 7 | 26567 | 26617 |
| Base 8 | 17758 | 17778 |
| Base 9 | 13549 | 13569 |
| Base 10 | 102110 | 102310 |
| Base 11 | 84911 | 85011 |
| Base 12 | 71112 | 71312 |
| Base 13 | 60713 | 60913 |
| Base 14 | 52d14 | 53114 |
| Base 15 | 48115 | 48315 |
| Base 16 | 3fd16 | 3ff16 |