Compare 2521 vs 3121
| Property | 2521 | 3121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 25211 | 31211 |
| Prime factorization | 2521 | 3121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 2521 | 1, 3121 |
| Number of properties | 6 | 7 |
| Additive primes | 228th | |
| Centered square primes | 18th | 19th |
| Emirps | 105th | |
| Good primes | 71st | |
| Harmonic primes | 138th | |
| Isolated primes | 226th | |
| Lucky primes | 94th | |
| Primes | 369th | 445th |
| Pythagorean primes | 181st | 219th |
| Twin primes (2nd member) | 83rd | |
| Roman numberals | MMDXXI | MMMCXXI |
| Base 2 | 1001110110012 | 1100001100012 |
| Base 3 | 101101013 | 110211213 |
| Base 4 | 2131214 | 3003014 |
| Base 5 | 400415 | 444415 |
| Base 6 | 154016 | 222416 |
| Base 7 | 102317 | 120467 |
| Base 8 | 47318 | 60618 |
| Base 9 | 34119 | 42479 |
| Base 10 | 252110 | 312110 |
| Base 11 | 199211 | 238811 |
| Base 12 | 156112 | 198112 |
| Base 13 | 11bc13 | 156113 |
| Base 14 | cc114 | 11cd14 |
| Base 15 | b3115 | dd115 |
| Base 16 | 9d916 | c3116 |