Prime Number Calculator

Number
Result

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Prime Number Calculator can determine whether a given number is a prime and also compute its previous and next prime number.

What it the "Prime Number"?

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. In other words, a prime number can only be divided evenly (without any remainder) by 1 and the number itself. For example, the numbers 2, 3, 5, 7, 11, and 13 are all prime numbers.

Here are some key points about prime numbers:

  • 2 is the smallest prime number and the only even prime number.

  • Every other prime number is odd.

  • There are infinitely many prime numbers; this fact is known as the infinitude of primes.

  • Prime numbers are fundamental in number theory and have various applications in cryptography and computer science.

Twin Calculators (Twofold Calculators), which combines two calculators into one, and the calculation result can be copied and pasted between the two calculators with one click.

Twin Calculators

Twin Calculators (Twofold Calculators), which combines two calculators into one, and the calculation result can be copied and pasted between the two calculators with one click.
Perimeter Calculator supports perimeter calculations for common geometric figures such as Circular, Sector, Ellipse, Triangle, Square, Rectangle, and Parallelogram.  You can use different formulas and methods to calculate the perimeter of these geometric figures depending on the shape and the given information.

Perimeter Calculator

Perimeter Calculator supports perimeter calculations for common geometric figures such as Circular, Sector, Ellipse, Triangle, Square, Rectangle, and Parallelogram. You can use different formulas and methods to calculate the perimeter of these geometric figures depending on the shape and the given information.
Area Calculator supports area calculations for common geometric figures such as Circular, Sector, Ring, Ellipse, Triangle, Square, Rectangle, Parallelogram and Trapezoid.

Area Calculator

Area Calculator supports area calculations for common geometric figures such as Circular, Sector, Ring, Ellipse, Triangle, Square, Rectangle, Parallelogram and Trapezoid.
Surface Area Calculator supports surface area calculations for common geometric figures such as Sphere, Spherical Sector, Segment, Cylinder, Hollow Cylinder(Pipe), Oblique Straight Cylinder, Cone, Circular Truncated Cone, Ellipsoid, Triangle Prism, Pyramid, Cube, Cuboid, Torus and Sphere Belt.

Surface Area Calculator

Surface Area Calculator supports surface area calculations for common geometric figures such as Sphere, Spherical Sector, Segment, Cylinder, Hollow Cylinder(Pipe), Oblique Straight Cylinder, Cone, Circular Truncated Cone, Ellipsoid, Triangle Prism, Pyramid, Cube, Cuboid, Torus and Sphere Belt.