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Prime number generator

World's simplest math tool

Free online prime number generator. Just specify how many primes you'll need and you'll automatically get that many primes. There are no ads, popups or nonsense, just an awesome prime calculator. Press button, get primes. Created by mathematicians for mathematicians.
Prime Generator Options
Start generating primes from this number
How many primes to generate?
Which character to separate primes with? (Newline by default.)
Prime number generator tool What is a prime number generator?
This tool calculates prime numbers. A prime number is a number that isn't divisible by any other number. You can specify how many prime numbers you need and starting prime number. You can also specify the symbol to use for separating generated primes. Mathabulous!
Prime number generator examples Click to use
Generate 10 prime numbers
This example calculates 10 prime numbers starting from 1000.
1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061
Required options
These options will be used automatically if you select this example.
Start generating primes from this number
How many primes to generate?
Calculate five primes and separate them by comma
This example generates 5 primes and separates them by a comma.
2, 3, 5, 7, 11
Required options
These options will be used automatically if you select this example.
Start generating primes from this number
How many primes to generate?
Which character to separate primes with? (Newline by default.)
Pro tips Master online math tools
You can pass options to this tool using their codes as query arguments and it will automatically compute output. To get the code of an option, just hover over its icon. Here's how to type it in your browser's address bar. Click to try!
https://onlinemathtools.com/generate-prime-numbers?&start=1000&count=10
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Quickly visualize rules of an Lindenmayer rewrite system.
Quickly generate a list of primes.
Quickly generate a list of Fibonacci numbers.
Quickly generate a list of extended, negative Fibonacci numbers.
Quickly generate a list of Fibonacci primes.
Quickly generate a list of Fibonacci words.
Quickly generate a list of Tribonacci words.
Quickly generate a list of Lucas numbers.
Quickly generate a list of extended, negative Lucas numbers.
Quickly generate a list of Lucas numbers that are also prime numbers.
Quickly generate a list of perfect numbers.
Quickly generate random numbers.
Quickly generate a list of look-and-say sequence numbers.
Quickly create a list of Prouhet-Thue-Morse sequence values.
Quickly create a list of dragon curve sequence values.
Quickly create a list of Oldenburger-Kolakoski sequence values.
Quickly create a list of Gijswijt sequence values.
Quickly create a list of Golay-Rudin-Shapiro sequence values.
Quickly create a list of Baum-Sweet sequence values.
Quickly generate π constant's digits to arbitrary precision.
Quickly calculate Euler constant's digits to arbitrary precision.
Quickly calculate φ constant's digits to arbitrary precision.
Quickly calculate factorials.
Quickly create a triangluar array of binomial coefficients.
Quickly find the transpose of a matrix.
Quickly find the inverse of a matrix.
Quickly calculate the determinant of a matrix.
Find the product of matrices.
Quickly draw a Hilbert space-filling curve.
Quickly draw a dragon space-filling curve.
Quickly draw a Peano space-filling curve.
Quickly draw a Moore space-filling curve.
Quickly draw a Peano-Gosper space-filling curve.
Quickly draw a Sierpinski arrowhead fractal curve.
Quickly draw a Sierpinski sieve fractal.
Quickly draw a Sierpinski closed plane fractal curve.
Quickly draw a Sierpinski carpet fractal.
Quickly draw a Koch island fractal curve.
Quickly draw a self-similar Levy C fractal curve.
Quickly draw a Vicsek snowflake fractal.
Quickly draw a T-square fractal.
Quickly draw a Cantor set fractal.
Quickly draw an asymmetric Cantor set fractal.
Quickly draw a generalized Cantor set fractal.
Quickly draw a Cantor dust fractal.
Quickly draw a Fibonacci word fractal.
Quickly generate a Morton Z-order fractal curve.
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Find n-th e Digit
Calculate the n-th digit of Euler's number.
Find n-th Golden Ratio Digit
Calculate the n-th digit of Golden Ratio.
Find n-th Pi Digit
Calculate the n-th digit of pi constant.
Find Prime Factors
Given a number, factorize it and find its prime factors.
Test if a Number is a Prime
Find out if the given number is a prime number.
Test if a Number is a Fibonacci Number
Find out if the given number is a Fibonacci number.
Decode a Look-and-say Sequence
Perform the inverse operation on a look-and-say sequence.
Generate a Moser-de Bruijn Sequence
Create a list of Moser-de Bruijn sequence values.
Generate a Random Matrix
Create a matrix with random elements.
Generate an Identity Matrix
Create a matrix with ones along the diagonal.
Check if a Matrix is Singular
Determine if a matrix is degenerate.
Find the Co-factor Matrix
Given a matrix, find its cofactor matrix.
Find the Adjugate Matrix
Given a matrix, find its adjunct.
LU Factor a Matrix
Decompose a matrix into LU factors.
Find Matrix Eigenvalues
Find eigenvalues of a matrix.
Draw a Apollonian Gasket
Generate an Apollonian gasket fractal.
Draw a Mandelbrot Fractal
Generate a Mandelbrot fractal.
Draw a Julia Fractal
Generate a Julia fractal.
Draw a Rauzy Fractal
Generate a Rauzy fractal.
Draw a Quadric Cross Fractal
Generate a Quadric cross fractal.
Draw a Sierpinski Pentagon Fractal
Generate a Sierpinski pentagon fractal (also known as pentaflake).
Draw a Sierpinski Hexagon Fractal
Generate a Sierpinski hexagon fractal (also known as hexaflake).
Draw Smith-Volterra-Cantor Set Fractal
Generate a Smith-Volterra-Cantor set fractal.
Draw Blancmange Fractal Curve
Generate a Blancmange fractal.
Draw Weierstrass Function
Generate a Weierstrass fractal.
Draw Minkowski Question-mark Curve
Generate a Minkowski Question-mark fractal.
Draw Thomae's Function
Generate a Thomae's function (also known as popcorn or raindrop function).
Draw Dirichlet's Function
Generate a Dirichlet's function.