Compare 345 vs 349
| Property | 345 | 349 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 51 × 231 | 3491 |
| Prime factorization | 3 × 5 × 23 | 349 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 5, 15, 23, 69, 115, 345 | 1, 349 |
| Number of properties | 0 | 7 |
| Cousin primes (1st member) | 20th | |
| Harmonic primes | 30th | |
| Lucky primes | 20th | |
| Primes | 70th | |
| Prime triplets (2nd member) | 20th | |
| Pythagorean primes | 33rd | |
| Twin primes (2nd member) | 21st | |
| Roman numberals | CCCXLV | CCCXLIX |
| Base 2 | 1010110012 | 1010111012 |
| Base 3 | 1102103 | 1102213 |
| Base 4 | 111214 | 111314 |
| Base 5 | 23405 | 23445 |
| Base 6 | 13336 | 13416 |
| Base 7 | 10027 | 10067 |
| Base 8 | 5318 | 5358 |
| Base 9 | 4239 | 4279 |
| Base 10 | 34510 | 34910 |
| Base 11 | 29411 | 29811 |
| Base 12 | 24912 | 25112 |
| Base 13 | 20713 | 20b13 |
| Base 14 | 1a914 | 1ad14 |
| Base 15 | 18015 | 18415 |
| Base 16 | 15916 | 15d16 |