Compare 643 vs 701
| Property | 643 | 701 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6431 | 7011 |
| Prime factorization | 643 | 701 |
| Divisors count | 2 | 2 |
| Divisors | 1, 643 | 1, 701 |
| Number of properties | 7 | 6 |
| Additive primes | 63rd | |
| Chen primes | 87th | |
| Cousin primes (1st member) | 29th | |
| Emirps | 21st | |
| Isolated primes | 67th | |
| Left-truncatable primes | 38th | |
| Long primes | 45th | |
| Lucky primes | 33rd | |
| Primes | 117th | 126th |
| Prime triplets (2nd member) | 24th | |
| Pythagorean primes | 60th | |
| Twin primes (2nd member) | 29th | |
| Roman numberals | DCXLIII | DCCI |
| Base 2 | 10100000112 | 10101111012 |
| Base 3 | 2122113 | 2212223 |
| Base 4 | 220034 | 223314 |
| Base 5 | 100335 | 103015 |
| Base 6 | 25516 | 31256 |
| Base 7 | 16067 | 20217 |
| Base 8 | 12038 | 12758 |
| Base 9 | 7849 | 8589 |
| Base 10 | 64310 | 70110 |
| Base 11 | 53511 | 58811 |
| Base 12 | 45712 | 4a512 |
| Base 13 | 3a613 | 41c13 |
| Base 14 | 33d14 | 38114 |
| Base 15 | 2cd15 | 31b15 |
| Base 16 | 28316 | 2bd16 |