Compare 421 vs 487
| Property | 421 | 487 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4211 | 4871 |
| Prime factorization | 421 | 487 |
| Divisors count | 2 | 2 |
| Divisors | 1, 421 | 1, 487 |
| Number of properties | 6 | 10 |
| Additive primes | 48th | 54th |
| Centered square primes | 8th | |
| Chen primes | 65th | |
| Cousin primes (1st member) | 26th | |
| Happy primes | 23rd | |
| Harmonic primes | 37th | |
| Isolated primes | 46th | |
| Long primes | 33rd | |
| Lucky primes | 23rd | 26th |
| Pierpont primes | 16th | |
| Primes | 82nd | 93rd |
| Pythagorean primes | 40th | |
| Twin primes (2nd member) | 22nd | |
| Roman numberals | CDXXI | CDLXXXVII |
| Base 2 | 1101001012 | 1111001112 |
| Base 3 | 1201213 | 2000013 |
| Base 4 | 122114 | 132134 |
| Base 5 | 31415 | 34225 |
| Base 6 | 15416 | 21316 |
| Base 7 | 11417 | 12647 |
| Base 8 | 6458 | 7478 |
| Base 9 | 5179 | 6019 |
| Base 10 | 42110 | 48710 |
| Base 11 | 35311 | 40311 |
| Base 12 | 2b112 | 34712 |
| Base 13 | 26513 | 2b613 |
| Base 14 | 22114 | 26b14 |
| Base 15 | 1d115 | 22715 |
| Base 16 | 1a516 | 1e716 |