Q: What are the prime factors of the number 147,603,248?

 A: 2, 13, 17, 19

Why are those the prime factors of the number 147,603,248?

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 147,603,248

147,603,248
Factor Arrows
273,801,624
Factor Arrows
236,900,812
Factor Arrows
218,450,406
Factor Arrows
29,225,203
Factor Arrows
13709,631
Factor Arrows
1354,587
Factor Arrows
134,199
Factor Arrows
13323
Factor Arrows
1719

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, 13, 17, 19

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 13 x 13 x 13 x 17 x 19 = 147,603,248

This can also be written as 24 x 134 x 171 x 191 = 147,603,248

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


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