Compare 417 vs 421
| Property | 417 | 421 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 1391 | 4211 |
| Prime factorization | 3 × 139 | 421 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 139, 417 | 1, 421 |
| Number of properties | 1 | 6 |
| Additive primes | 48th | |
| Centered square primes | 8th | |
| Lucky primes | 23rd | |
| Primes | 82nd | |
| Pythagorean primes | 40th | |
| Semiprimes | 132nd | |
| Twin primes (2nd member) | 22nd | |
| Roman numberals | CDXVII | CDXXI |
| Base 2 | 1101000012 | 1101001012 |
| Base 3 | 1201103 | 1201213 |
| Base 4 | 122014 | 122114 |
| Base 5 | 31325 | 31415 |
| Base 6 | 15336 | 15416 |
| Base 7 | 11347 | 11417 |
| Base 8 | 6418 | 6458 |
| Base 9 | 5139 | 5179 |
| Base 10 | 41710 | 42110 |
| Base 11 | 34a11 | 35311 |
| Base 12 | 2a912 | 2b112 |
| Base 13 | 26113 | 26513 |
| Base 14 | 21b14 | 22114 |
| Base 15 | 1cc15 | 1d115 |
| Base 16 | 1a116 | 1a516 |