Compare 421 vs 2521
| Property | 421 | 2521 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4211 | 25211 |
| Prime factorization | 421 | 2521 |
| Divisors count | 2 | 2 |
| Divisors | 1, 421 | 1, 2521 |
| Number of properties | 6 | 6 |
| Additive primes | 48th | |
| Centered square primes | 8th | 18th |
| Good primes | 71st | |
| Harmonic primes | 138th | |
| Isolated primes | 226th | |
| Lucky primes | 23rd | |
| Primes | 82nd | 369th |
| Pythagorean primes | 40th | 181st |
| Twin primes (2nd member) | 22nd | |
| Roman numberals | CDXXI | MMDXXI |
| Base 2 | 1101001012 | 1001110110012 |
| Base 3 | 1201213 | 101101013 |
| Base 4 | 122114 | 2131214 |
| Base 5 | 31415 | 400415 |
| Base 6 | 15416 | 154016 |
| Base 7 | 11417 | 102317 |
| Base 8 | 6458 | 47318 |
| Base 9 | 5179 | 34119 |
| Base 10 | 42110 | 252110 |
| Base 11 | 35311 | 199211 |
| Base 12 | 2b112 | 156112 |
| Base 13 | 26513 | 11bc13 |
| Base 14 | 22114 | cc114 |
| Base 15 | 1d115 | b3115 |
| Base 16 | 1a516 | 9d916 |