Compare 349 vs 355
| Property | 349 | 355 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 3491 | 51 × 711 |
| Prime factorization | 349 | 5 × 71 |
| Divisors count | 2 | 4 |
| Divisors | 1, 349 | 1, 5, 71, 355 |
| Number of properties | 7 | 1 |
| Cousin primes (1st member) | 20th | |
| Harmonic primes | 30th | |
| Lucky primes | 20th | |
| Primes | 70th | |
| Prime triplets (2nd member) | 20th | |
| Pythagorean primes | 33rd | |
| Semiprimes | 112th | |
| Twin primes (2nd member) | 21st | |
| Roman numberals | CCCXLIX | CCCLV |
| Base 2 | 1010111012 | 1011000112 |
| Base 3 | 1102213 | 1110113 |
| Base 4 | 111314 | 112034 |
| Base 5 | 23445 | 24105 |
| Base 6 | 13416 | 13516 |
| Base 7 | 10067 | 10157 |
| Base 8 | 5358 | 5438 |
| Base 9 | 4279 | 4349 |
| Base 10 | 34910 | 35510 |
| Base 11 | 29811 | 2a311 |
| Base 12 | 25112 | 25712 |
| Base 13 | 20b13 | 21413 |
| Base 14 | 1ad14 | 1b514 |
| Base 15 | 18415 | 18a15 |
| Base 16 | 15d16 | 16316 |