Compare 421 vs 3121
| Property | 421 | 3121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4211 | 31211 |
| Prime factorization | 421 | 3121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 421 | 1, 3121 |
| Number of properties | 6 | 7 |
| Additive primes | 48th | 228th |
| Centered square primes | 8th | 19th |
| Emirps | 105th | |
| Lucky primes | 23rd | 94th |
| Primes | 82nd | 445th |
| Pythagorean primes | 40th | 219th |
| Twin primes (2nd member) | 22nd | 83rd |
| Roman numberals | CDXXI | MMMCXXI |
| Base 2 | 1101001012 | 1100001100012 |
| Base 3 | 1201213 | 110211213 |
| Base 4 | 122114 | 3003014 |
| Base 5 | 31415 | 444415 |
| Base 6 | 15416 | 222416 |
| Base 7 | 11417 | 120467 |
| Base 8 | 6458 | 60618 |
| Base 9 | 5179 | 42479 |
| Base 10 | 42110 | 312110 |
| Base 11 | 35311 | 238811 |
| Base 12 | 2b112 | 198112 |
| Base 13 | 26513 | 156113 |
| Base 14 | 22114 | 11cd14 |
| Base 15 | 1d115 | dd115 |
| Base 16 | 1a516 | c3116 |