Compare 31980 vs 31981
| Property | 31980 | 31981 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 5 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 22 × 31 × 51 × 131 × 411 | 319811 |
| Prime factorization | 2 × 2 × 3 × 5 × 13 × 41 | 31981 |
| Divisors count | 48 | 2 |
| Divisors | 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 41, 52, 60, 65, 78, 82, 123, 130, 156, 164, 195, 205, 246, 260, 390, 410, 492, 533, 615, 780, 820, 1066, 1230, 1599, 2132, 2460, 2665, 3198, 5330, 6396, 7995, 10660, 15990, 31980 | 1, 31981 |
| Number of properties | 0 | 5 |
| Emirps | 697th | |
| Isolated primes | 2450th | |
| Long primes | 1300th | |
| Primes | 3431st | |
| Pythagorean primes | 1705th | |
| Roman numberals | ||
| Base 2 | 1111100111011002 | 1111100111011012 |
| Base 3 | 11212121103 | 11212121113 |
| Base 4 | 133032304 | 133032314 |
| Base 5 | 20104105 | 20104115 |
| Base 6 | 4040206 | 4040216 |
| Base 7 | 1621447 | 1621457 |
| Base 8 | 763548 | 763558 |
| Base 9 | 477739 | 477749 |
| Base 10 | 3198010 | 3198110 |
| Base 11 | 2203311 | 2203411 |
| Base 12 | 1661012 | 1661112 |
| Base 13 | 1173013 | 1173113 |
| Base 14 | b92414 | b92514 |
| Base 15 | 972015 | 972115 |
| Base 16 | 7cec16 | 7ced16 |