Q: What are the prime factors of the number 131,143,152?

 A: 2, 3, 7, 390307

Why are those the prime factors of the number 131,143,152?

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 131,143,152

131,143,152
Factor Arrows
265,571,576
Factor Arrows
232,785,788
Factor Arrows
216,392,894
Factor Arrows
28,196,447
Factor Arrows
32,732,149
Factor Arrows
7390,307

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, 7, 390307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 390,307 = 131,143,152

This can also be written as 24 x 31 x 71 x 390,3071 = 131,143,152

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


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