Compare 43 vs 157
| Property | 43 | 157 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 431 | 1571 |
| Prime factorization | 43 | 157 |
| Divisors count | 2 | 2 |
| Divisors | 1, 43 | 1, 157 |
| Number of properties | 12 | 11 |
| Additive primes | 9th | 21st |
| Centered heptagonal primes | 1st | |
| Chen primes | 30th | |
| Cousin primes (1st member) | 6th | |
| Emirps | 12th | |
| Harmonic primes | 13th | |
| Isolated primes | 14th | |
| Left-truncatable primes | 9th | |
| Lucky primes | 6th | |
| Primes | 14th | 37th |
| Prime triplets (2nd member) | 7th | |
| Prime triplets (3rd member) | 6th | |
| Pythagorean primes | 17th | |
| Sexy primes (1st member) | 22nd | |
| Sexy primes (2nd member) | 8th | 21st |
| Sexy prime triplets (2nd member) | 12th | |
| Sexy prime triplets (3rd member) | 5th | |
| Super primes | 12th | |
| Twin primes (2nd member) | 6th | |
| Wagstaff primes | 3rd | |
| Roman numberals | XLIII | CLVII |
| Base 2 | 1010112 | 100111012 |
| Base 3 | 11213 | 122113 |
| Base 4 | 2234 | 21314 |
| Base 5 | 1335 | 11125 |
| Base 6 | 1116 | 4216 |
| Base 7 | 617 | 3137 |
| Base 8 | 538 | 2358 |
| Base 9 | 479 | 1849 |
| Base 10 | 4310 | 15710 |
| Base 11 | 3a11 | 13311 |
| Base 12 | 3712 | 11112 |
| Base 13 | 3413 | c113 |
| Base 14 | 3114 | b314 |
| Base 15 | 2d15 | a715 |
| Base 16 | 2b16 | 9d16 |