Compare 63 vs 71
| Property | 63 | 71 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 32 × 71 | 711 |
| Prime factorization | 3 × 3 × 7 | 71 |
| Divisors count | 6 | 2 |
| Divisors | 1, 3, 7, 9, 21, 63 | 1, 71 |
| Number of properties | 0 | 13 |
| Centered heptagonal primes | 2nd | |
| Chen primes | 18th | |
| Class 1+ primes | 11th | |
| Cousin primes (2nd member) | 7th | |
| Emirps | 5th | |
| Good primes | 10th | |
| Multiplicative primes | 8th | |
| Pierpont primes of the 2nd kind | 11th | |
| Primes | 20th | |
| Prime triplets (2nd member) | 8th | |
| Right-truncatable primes | 11th | |
| Solinas primes | 17th | |
| Twin primes (1st member) | 8th | |
| Roman numberals | LXIII | LXXI |
| Base 2 | 1111112 | 10001112 |
| Base 3 | 21003 | 21223 |
| Base 4 | 3334 | 10134 |
| Base 5 | 2235 | 2415 |
| Base 6 | 1436 | 1556 |
| Base 7 | 1207 | 1317 |
| Base 8 | 778 | 1078 |
| Base 9 | 709 | 789 |
| Base 10 | 6310 | 7110 |
| Base 11 | 5811 | 6511 |
| Base 12 | 5312 | 5b12 |
| Base 13 | 4b13 | 5613 |
| Base 14 | 4714 | 5114 |
| Base 15 | 4315 | 4b15 |
| Base 16 | 3f16 | 4716 |