Q: What are the prime factors of the number 154,631,120?

 A: 2, 5, 7, 19, 14533

Why are those the prime factors of the number 154,631,120?

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 154,631,120

154,631,120
Factor Arrows
277,315,560
Factor Arrows
238,657,780
Factor Arrows
219,328,890
Factor Arrows
29,664,445
Factor Arrows
51,932,889
Factor Arrows
7276,127
Factor Arrows
1914,533

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, 19, 14533

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 19 x 14,533 = 154,631,120

This can also be written as 24 x 51 x 71 x 191 x 14,5331 = 154,631,120

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


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