Compare 43 vs 49
| Property | 43 | 49 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 2 |
| Prime factorization | 431 | 72 |
| Prime factorization | 43 | 7 × 7 |
| Divisors count | 2 | 3 |
| Divisors | 1, 43 | 1, 7, 49 |
| Number of properties | 12 | 1 |
| Additive primes | 9th | |
| Centered heptagonal primes | 1st | |
| Cousin primes (1st member) | 6th | |
| Left-truncatable primes | 9th | |
| Lucky primes | 6th | |
| Primes | 14th | |
| Prime triplets (2nd member) | 7th | |
| Prime triplets (3rd member) | 6th | |
| Semiprimes | 17th | |
| Sexy primes (2nd member) | 8th | |
| Sexy prime triplets (3rd member) | 5th | |
| Twin primes (2nd member) | 6th | |
| Wagstaff primes | 3rd | |
| Roman numberals | XLIII | XLIX |
| Base 2 | 1010112 | 1100012 |
| Base 3 | 11213 | 12113 |
| Base 4 | 2234 | 3014 |
| Base 5 | 1335 | 1445 |
| Base 6 | 1116 | 1216 |
| Base 7 | 617 | 1007 |
| Base 8 | 538 | 618 |
| Base 9 | 479 | 549 |
| Base 10 | 4310 | 4910 |
| Base 11 | 3a11 | 4511 |
| Base 12 | 3712 | 4112 |
| Base 13 | 3413 | 3a13 |
| Base 14 | 3114 | 3714 |
| Base 15 | 2d15 | 3415 |
| Base 16 | 2b16 | 3116 |