Q: What are the prime factors of the number 154,623,700?

 A: 2, 5, 7, 11, 43, 467

Why are those the prime factors of the number 154,623,700?

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 154,623,700

154,623,700
Factor Arrows
277,311,850
Factor Arrows
238,655,925
Factor Arrows
57,731,185
Factor Arrows
51,546,237
Factor Arrows
7220,891
Factor Arrows
1120,081
Factor Arrows
43467

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, 11, 43, 467

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 11 x 43 x 467 = 154,623,700

This can also be written as 22 x 52 x 71 x 111 x 431 x 4671 = 154,623,700

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


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