Prime Factorization Calculator

Break a whole number into its prime factors.

See the building blocks of an integer in multiplied form.

Your inputs stay on your device

Find prime factors

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Value

Prime factors

2 × 2 × 2 × 3 × 3 × 5

Enter dimensions or values only; results are mathematical estimates and do not replace construction, engineering, or academic requirements.

Context & Reference

For breaking an integer into prime building blocks.

calculator guide

Divides successively by possible factors and records each factor.

Use this calculator with your own values, then review the clearly labelled result and copy it when you need it elsewhere.

Repeated values show repeated prime factors.

84 factors into 2 × 2 × 3 × 7.

Inputs are limited to whole numbers from 2 to 1,000,000,000.

This calculator runs locally in this browser. Inputs are limited to whole numbers from 2 to 1,000,000,000.

Useful next steps

Continue with a closely related task, calculation, conversion, or local text tool.

Check whether a whole number is prime.

Find the greatest common divisor and least common multiple of two integers.

Work out percentages, changes, and proportions in a blink.

Find the mean, median, minimum, and maximum of a number list.

Add, subtract, multiply, or divide two fractions.

Evaluate expressions with powers, square roots, and percentages.