Q: What are the prime factors of the number 154,741,770?

 A: 2, 3, 5, 31, 37, 1499

Why are those the prime factors of the number 154,741,770?

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 154,741,770

154,741,770
Factor Arrows
277,370,885
Factor Arrows
325,790,295
Factor Arrows
38,596,765
Factor Arrows
51,719,353
Factor Arrows
3155,463
Factor Arrows
371,499

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, 31, 37, 1499

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 31 x 37 x 1,499 = 154,741,770

This can also be written as 21 x 32 x 51 x 311 x 371 x 1,4991 = 154,741,770

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


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