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Question

Find the prime factorization of number 400.

Answer

The prime factorization of 400 is:

$$ 400 = 2\cdot2\cdot2\cdot2\cdot5\cdot5 $$

Which is the same as :

$$ 400 = 2^{4}\cdot5^{2} $$

Explanation

Prime factorization can be nicely visualized by creating a factorization tree.

400 can be written as 10 × 40.
  • 400
    • 10
    • 40
10 can be written as 2 × 5.
  • 400
    • 10
      • 5
      • 2
    • 40
40 can be written as 10 × 4.
  • 400
    • 10
      • 5
      • 2
    • 40
      • 10
      • 4
10 can be written as 2 × 5.
  • 400
    • 10
      • 5
      • 2
    • 40
      • 10
        • 5
        • 2
      • 4
4 can be written as 2 × 2.
  • 400
    • 10
      • 5
      • 2
    • 40
      • 10
        • 5
        • 2
      • 4
        • 2
        • 2
The end nodes are the prime factors of the number 400.
  • 400
    • 10
      • 5
      • 2
    • 40
      • 10
        • 5
        • 2
      • 4
        • 2
        • 2
This page was created using
Prime factorization calculator