Compare 347 vs 351
| Property | 347 | 351 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 4 |
| Prime factorization | 3471 | 33 × 131 |
| Prime factorization | 347 | 3 × 3 × 3 × 13 |
| Divisors count | 2 | 8 |
| Divisors | 1, 347 | 1, 3, 9, 13, 27, 39, 117, 351 |
| Number of properties | 10 | 0 |
| Chen primes | 51st | |
| Emirps | 18th | |
| Good primes | 25th | |
| Left-truncatable primes | 26th | |
| Primes | 69th | |
| Prime triplets (1st member) | 20th | |
| Safe primes | 13th | |
| Sexy primes (1st member) | 38th | |
| Sexy prime triplets (1st member) | 18th | |
| Twin primes (1st member) | 21st | |
| Roman numberals | CCCXLVII | CCCLI |
| Base 2 | 1010110112 | 1010111112 |
| Base 3 | 1102123 | 1110003 |
| Base 4 | 111234 | 111334 |
| Base 5 | 23425 | 24015 |
| Base 6 | 13356 | 13436 |
| Base 7 | 10047 | 10117 |
| Base 8 | 5338 | 5378 |
| Base 9 | 4259 | 4309 |
| Base 10 | 34710 | 35110 |
| Base 11 | 29611 | 29a11 |
| Base 12 | 24b12 | 25312 |
| Base 13 | 20913 | 21013 |
| Base 14 | 1ab14 | 1b114 |
| Base 15 | 18215 | 18615 |
| Base 16 | 15b16 | 15f16 |