Q: What are the prime factors of the number 154,054,320?

 A: 2, 3, 5, 7, 107, 857

Why are those the prime factors of the number 154,054,320?

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 154,054,320

154,054,320
Factor Arrows
277,027,160
Factor Arrows
238,513,580
Factor Arrows
219,256,790
Factor Arrows
29,628,395
Factor Arrows
33,209,465
Factor Arrows
5641,893
Factor Arrows
791,699
Factor Arrows
107857

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, 7, 107, 857

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 107 x 857 = 154,054,320

This can also be written as 24 x 31 x 51 x 71 x 1071 x 8571 = 154,054,320

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


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