Compare 347 vs 355
| Property | 347 | 355 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 3471 | 51 × 711 |
| Prime factorization | 347 | 5 × 71 |
| Divisors count | 2 | 4 |
| Divisors | 1, 347 | 1, 5, 71, 355 |
| Number of properties | 10 | 1 |
| Chen primes | 51st | |
| Emirps | 18th | |
| Good primes | 25th | |
| Left-truncatable primes | 26th | |
| Primes | 69th | |
| Prime triplets (1st member) | 20th | |
| Safe primes | 13th | |
| Semiprimes | 112th | |
| Sexy primes (1st member) | 38th | |
| Sexy prime triplets (1st member) | 18th | |
| Twin primes (1st member) | 21st | |
| Roman numberals | CCCXLVII | CCCLV |
| Base 2 | 1010110112 | 1011000112 |
| Base 3 | 1102123 | 1110113 |
| Base 4 | 111234 | 112034 |
| Base 5 | 23425 | 24105 |
| Base 6 | 13356 | 13516 |
| Base 7 | 10047 | 10157 |
| Base 8 | 5338 | 5438 |
| Base 9 | 4259 | 4349 |
| Base 10 | 34710 | 35510 |
| Base 11 | 29611 | 2a311 |
| Base 12 | 24b12 | 25712 |
| Base 13 | 20913 | 21413 |
| Base 14 | 1ab14 | 1b514 |
| Base 15 | 18215 | 18a15 |
| Base 16 | 15b16 | 16316 |