Q: What are the prime factors of the number 142,423,400?

 A: 2, 5, 7, 14533

Why are those the prime factors of the number 142,423,400?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 142,423,400

142,423,400
Factor Arrows
271,211,700
Factor Arrows
235,605,850
Factor Arrows
217,802,925
Factor Arrows
53,560,585
Factor Arrows
5712,117
Factor Arrows
7101,731
Factor Arrows
714,533

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 5, 7, 14533

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 7 x 7 x 14,533 = 142,423,400

This can also be written as 23 x 52 x 72 x 14,5331 = 142,423,400

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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