Compare 3121 vs 3131
| Property | 3121 | 3131 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 31211 | 311 × 1011 |
| Prime factorization | 3121 | 31 × 101 |
| Divisors count | 2 | 4 |
| Divisors | 1, 3121 | 1, 31, 101, 3131 |
| Number of properties | 7 | 1 |
| Additive primes | 228th | |
| Centered square primes | 19th | |
| Emirps | 105th | |
| Lucky primes | 94th | |
| Primes | 445th | |
| Pythagorean primes | 219th | |
| Semiprimes | 879th | |
| Twin primes (2nd member) | 83rd | |
| Roman numberals | MMMCXXI | MMMCXXXI |
| Base 2 | 1100001100012 | 1100001110112 |
| Base 3 | 110211213 | 110212223 |
| Base 4 | 3003014 | 3003234 |
| Base 5 | 444415 | 1000115 |
| Base 6 | 222416 | 222556 |
| Base 7 | 120467 | 120627 |
| Base 8 | 60618 | 60738 |
| Base 9 | 42479 | 42589 |
| Base 10 | 312110 | 313110 |
| Base 11 | 238811 | 239711 |
| Base 12 | 198112 | 198b12 |
| Base 13 | 156113 | 156b13 |
| Base 14 | 11cd14 | 11d914 |
| Base 15 | dd115 | ddb15 |
| Base 16 | c3116 | c3b16 |