1 million digits of PI 1 billion digits of PI Mandelbrot set Explorer

Number 2991

Properties of the number 2991

Prime Factorization 3 x 997
Divisors 1, 3, 997, 2991
Count of divisors 4
Sum of divisors 3992
Previous integer 2990
Next integer 2992
Is prime? NO
Previous prime 2971
Next prime 2999
2991st prime number
calculating, please wait
Is a Fibonacci number? NO
Zeckendorf representation 2584 + 377 + 21 + 8 + 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 29912 8946081
Square root √2991 54.690035655501
Cube 29913 26757728271
Cubic root ∛2991 14.40805876079
Natural logarithm 8.0033630586299
Decimal logarithm 3.4758164130313

Trigonometry of the number 2991

2991 modulo 360° 111°
Sine of 2991 radians 0.20238605162346
Cosine of 2991 radians 0.97930581847974
Tangent of 2991 radians 0.20666276846761
Sine of 2991 degrees 0.9335804264972
Cosine of 2991 degrees -0.3583679495453
Tangent of 2991 degrees -2.6050890646938
2991 degrees in radiants 52.20279792715
2991 radiants in degrees 171371.67652363

Base conversion of the number 2991

Binary 101110101111
Octal 5657
Duodecimal 1893
Hexadecimal baf
« Previous Next »

Recommended Books

Looking for good books to read? Take a look at these books if you want to know more about the theory of numbers
To guide today's students through the key milestones and developments in number theory
Read it »
A comprehensive introduction to number theory, with complete proofs, worked examples, and exercises.
Read it »
Several of its challenges are so easy to state that everyone can understand them, and yet no-one has ever been able to resolve them.
Read it »
In addition to covering the basics, it offers an outstanding introduction to partitions, multiplicativity-divisibility, and more.
Read it »