Q: What are the prime factors of the number 147,436,440?

 A: 2, 3, 5, 23, 53419

Why are those the prime factors of the number 147,436,440?

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 147,436,440

147,436,440
Factor Arrows
273,718,220
Factor Arrows
236,859,110
Factor Arrows
218,429,555
Factor Arrows
36,143,185
Factor Arrows
51,228,637
Factor Arrows
2353,419

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, 3, 5, 23, 53419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 23 x 53,419 = 147,436,440

This can also be written as 23 x 31 x 51 x 231 x 53,4191 = 147,436,440

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


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