Q: What are the prime factors of the number 130,426,472?

 A: 2, 11, 73, 79, 257

Why are those the prime factors of the number 130,426,472?

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 130,426,472

130,426,472
Factor Arrows
265,213,236
Factor Arrows
232,606,618
Factor Arrows
216,303,309
Factor Arrows
111,482,119
Factor Arrows
7320,303
Factor Arrows
79257

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, 11, 73, 79, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 73 x 79 x 257 = 130,426,472

This can also be written as 23 x 111 x 731 x 791 x 2571 = 130,426,472

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


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