Compare 643 vs 859
| Property | 643 | 859 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6431 | 8591 |
| Prime factorization | 643 | 859 |
| Divisors count | 2 | 2 |
| Divisors | 1, 643 | 1, 859 |
| Number of properties | 7 | 8 |
| Additive primes | 63rd | |
| Cousin primes (1st member) | 29th | 36th |
| Harmonic primes | 56th | |
| Left-truncatable primes | 38th | |
| Lucky primes | 33rd | |
| Primes | 117th | 149th |
| Prime triplets (2nd member) | 24th | 28th |
| Prime triplets (3rd member) | 27th | |
| Sexy primes (2nd member) | 66th | |
| Super primes | 35th | |
| Twin primes (2nd member) | 29th | 34th |
| Roman numberals | DCXLIII | DCCCLIX |
| Base 2 | 10100000112 | 11010110112 |
| Base 3 | 2122113 | 10112113 |
| Base 4 | 220034 | 311234 |
| Base 5 | 100335 | 114145 |
| Base 6 | 25516 | 35516 |
| Base 7 | 16067 | 23357 |
| Base 8 | 12038 | 15338 |
| Base 9 | 7849 | 11549 |
| Base 10 | 64310 | 85910 |
| Base 11 | 53511 | 71111 |
| Base 12 | 45712 | 5b712 |
| Base 13 | 3a613 | 51113 |
| Base 14 | 33d14 | 45514 |
| Base 15 | 2cd15 | 3c415 |
| Base 16 | 28316 | 35b16 |