Prime Factorization Calculator

Break any whole number into its prime factors and see the factor tree behind it.

Result
Prime factorization
Expanded product
Number of divisors
Factor tree
Enter a whole number to see its prime factors and factor tree.

Every number is factored in your browser. Nothing you type is uploaded to BroBroGo.

FAQ

What is prime factorization?

It breaks a whole number into the prime numbers that multiply together to make it, for example 360 = 2 × 2 × 2 × 3 × 3 × 5. Every whole number above 1 has exactly one set of prime factors.

How do I read the factor tree?

Each number splits into a prime (highlighted) and the remaining factor, which splits again until only primes are left. Reading the highlighted leaves gives the full factorization.

How large a number can it handle?

Any whole number up to 9,007,199,254,740,991. Results are exact — the whole calculation uses integer arithmetic, so nothing is rounded.

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