Compare 2991 vs 3001
| Property | 2991 | 3001 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 9971 | 30011 |
| Prime factorization | 3 × 997 | 3001 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 997, 2991 | 1, 3001 |
| Number of properties | 1 | 6 |
| Centered decagonal primes | 17th | |
| Happy primes | 73rd | |
| Primes | 431st | |
| Pythagorean primes | 212th | |
| Semiprimes | 838th | |
| Super primes | 83rd | |
| Twin primes (2nd member) | 82nd | |
| Roman numberals | MMCMXCI | MMMI |
| Base 2 | 1011101011112 | 1011101110012 |
| Base 3 | 110022103 | 110100113 |
| Base 4 | 2322334 | 2323214 |
| Base 5 | 434315 | 440015 |
| Base 6 | 215036 | 215216 |
| Base 7 | 115027 | 115157 |
| Base 8 | 56578 | 56718 |
| Base 9 | 40839 | 41049 |
| Base 10 | 299110 | 300110 |
| Base 11 | 227a11 | 228911 |
| Base 12 | 189312 | 18a112 |
| Base 13 | 149113 | 149b13 |
| Base 14 | 113914 | 114514 |
| Base 15 | d4615 | d5115 |
| Base 16 | baf16 | bb916 |