| Prime Factorization |
991 |
| Divisors |
1, 991 |
| Count of divisors |
2 |
| Sum of divisors |
992 |
| Previous integer |
990 |
| Next integer |
992 |
| Is prime? |
YES |
| Prime number position |
167 |
| Previous prime |
983 |
| Next prime |
997 |
| 991st prime number |
↻ calculating, please wait |
| Is a Fibonacci number? |
NO |
| Zeckendorf representation |
987 + 3 + 1 |
| Is a Pell number? |
NO |
| Is a regular number? |
NO |
| Is a perfect number? |
NO |
| Is a perfect square number? |
NO |
| Is a perfect cube number? |
NO |
| Is power of 2? |
NO |
| Is power of 3? |
NO |
| Square 9912 |
982081 |
| Square root √991 |
31.480152477394 |
| Cube 9913 |
973242271 |
| Cubic root ∛991 |
9.9699095472821 |
| Natural logarithm |
6.89871453433 |
| Decimal logarithm |
2.9960736544853 |