Compare 123 vs 127
| Property | 123 | 127 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 411 | 1271 |
| Prime factorization | 3 × 41 | 127 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 41, 123 | 1, 127 |
| Number of properties | 1 | 13 |
| Chen primes | 25th | |
| Class 1+ primes | 13th | |
| Cousin primes (1st member) | 12th | |
| Cuban primes 1 | 5th | |
| Double mersenne primes | 2nd | |
| Good primes | 13th | |
| Isolated primes | 12th | |
| Lucky primes | 10th | |
| Mersenne primes | 4th | |
| Pierpont primes of the 2nd kind | 13th | |
| Primes | 31st | |
| Semiprimes | 42nd | |
| Solinas primes | 22nd | |
| Super primes | 11th | |
| Roman numberals | CXXIII | CXXVII |
| Base 2 | 11110112 | 11111112 |
| Base 3 | 111203 | 112013 |
| Base 4 | 13234 | 13334 |
| Base 5 | 4435 | 10025 |
| Base 6 | 3236 | 3316 |
| Base 7 | 2347 | 2417 |
| Base 8 | 1738 | 1778 |
| Base 9 | 1469 | 1519 |
| Base 10 | 12310 | 12710 |
| Base 11 | 10211 | 10611 |
| Base 12 | a312 | a712 |
| Base 13 | 9613 | 9a13 |
| Base 14 | 8b14 | 9114 |
| Base 15 | 8315 | 8715 |
| Base 16 | 7b16 | 7f16 |