Compare 1021 vs 1249
| Property | 1021 | 1249 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 10211 | 12491 |
| Prime factorization | 1021 | 1249 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1021 | 1, 1249 |
| Number of properties | 8 | 5 |
| Emirps | 38th | 58th |
| Harmonic primes | 61st | |
| Isolated primes | 121st | |
| Long primes | 62nd | |
| Lucky primes | 45th | 53rd |
| Primes | 172nd | 204th |
| Pythagorean primes | 83rd | 101st |
| Solinas primes | 46th | |
| Twin primes (2nd member) | 36th | |
| Roman numberals | MXXI | MCCXLIX |
| Base 2 | 11111111012 | 100111000012 |
| Base 3 | 11012113 | 12010213 |
| Base 4 | 333314 | 1032014 |
| Base 5 | 130415 | 144445 |
| Base 6 | 44216 | 54416 |
| Base 7 | 26567 | 34337 |
| Base 8 | 17758 | 23418 |
| Base 9 | 13549 | 16379 |
| Base 10 | 102110 | 124910 |
| Base 11 | 84911 | a3611 |
| Base 12 | 71112 | 88112 |
| Base 13 | 60713 | 75113 |
| Base 14 | 52d14 | 65314 |
| Base 15 | 48115 | 58415 |
| Base 16 | 3fd16 | 4e116 |