Compare 643 vs 967
| Property | 643 | 967 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6431 | 9671 |
| Prime factorization | 643 | 967 |
| Divisors count | 2 | 2 |
| Divisors | 1, 643 | 1, 967 |
| Number of properties | 7 | 8 |
| Additive primes | 63rd | |
| Cousin primes (1st member) | 29th | 41st |
| Emirps | 33rd | |
| Good primes | 44th | |
| Harmonic primes | 59th | |
| Isolated primes | 94th | |
| Left-truncatable primes | 38th | 52nd |
| Lucky primes | 33rd | |
| Primes | 117th | 163rd |
| Prime triplets (2nd member) | 24th | |
| Super primes | 38th | |
| Twin primes (2nd member) | 29th | |
| Roman numberals | DCXLIII | CMLXVII |
| Base 2 | 10100000112 | 11110001112 |
| Base 3 | 2122113 | 10222113 |
| Base 4 | 220034 | 330134 |
| Base 5 | 100335 | 123325 |
| Base 6 | 25516 | 42516 |
| Base 7 | 16067 | 25517 |
| Base 8 | 12038 | 17078 |
| Base 9 | 7849 | 12849 |
| Base 10 | 64310 | 96710 |
| Base 11 | 53511 | 7aa11 |
| Base 12 | 45712 | 68712 |
| Base 13 | 3a613 | 59513 |
| Base 14 | 33d14 | 4d114 |
| Base 15 | 2cd15 | 44715 |
| Base 16 | 28316 | 3c716 |