Compare 239 vs 247
| Property | 239 | 247 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2391 | 131 × 191 |
| Prime factorization | 239 | 13 × 19 |
| Divisors count | 2 | 4 |
| Divisors | 1, 239 | 1, 13, 19, 247 |
| Number of properties | 10 | 1 |
| Chen primes | 40th | |
| Happy primes | 13th | |
| Harmonic primes | 18th | |
| Primes | 52nd | |
| Right-truncatable primes | 15th | |
| Semiprimes | 79th | |
| Sexy primes (2nd member) | 29th | |
| Sexy prime triplets (3rd member) | 14th | |
| Solinas primes | 28th | |
| Sophie germain primes | 17th | |
| Twin primes (1st member) | 17th | |
| Roman numberals | CCXXXIX | CCXLVII |
| Base 2 | 111011112 | 111101112 |
| Base 3 | 222123 | 1000113 |
| Base 4 | 32334 | 33134 |
| Base 5 | 14245 | 14425 |
| Base 6 | 10356 | 10516 |
| Base 7 | 4617 | 5027 |
| Base 8 | 3578 | 3678 |
| Base 9 | 2859 | 3049 |
| Base 10 | 23910 | 24710 |
| Base 11 | 1a811 | 20511 |
| Base 12 | 17b12 | 18712 |
| Base 13 | 15513 | 16013 |
| Base 14 | 13114 | 13914 |
| Base 15 | 10e15 | 11715 |
| Base 16 | ef16 | f716 |