Compare 349 vs 421
| Property | 349 | 421 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3491 | 4211 |
| Prime factorization | 349 | 421 |
| Divisors count | 2 | 2 |
| Divisors | 1, 349 | 1, 421 |
| Number of properties | 7 | 6 |
| Additive primes | 48th | |
| Centered square primes | 8th | |
| Cousin primes (1st member) | 20th | |
| Harmonic primes | 30th | |
| Lucky primes | 20th | 23rd |
| Primes | 70th | 82nd |
| Prime triplets (2nd member) | 20th | |
| Pythagorean primes | 33rd | 40th |
| Twin primes (2nd member) | 21st | 22nd |
| Roman numberals | CCCXLIX | CDXXI |
| Base 2 | 1010111012 | 1101001012 |
| Base 3 | 1102213 | 1201213 |
| Base 4 | 111314 | 122114 |
| Base 5 | 23445 | 31415 |
| Base 6 | 13416 | 15416 |
| Base 7 | 10067 | 11417 |
| Base 8 | 5358 | 6458 |
| Base 9 | 4279 | 5179 |
| Base 10 | 34910 | 42110 |
| Base 11 | 29811 | 35311 |
| Base 12 | 25112 | 2b112 |
| Base 13 | 20b13 | 26513 |
| Base 14 | 1ad14 | 22114 |
| Base 15 | 18415 | 1d115 |
| Base 16 | 15d16 | 1a516 |