Q: What are the prime factors of the number 130,312,400?

 A: 2, 5, 325781

Why are those the prime factors of the number 130,312,400?

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 130,312,400

130,312,400
Factor Arrows
265,156,200
Factor Arrows
232,578,100
Factor Arrows
216,289,050
Factor Arrows
28,144,525
Factor Arrows
51,628,905
Factor Arrows
5325,781

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, 325781

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 325,781 = 130,312,400

This can also be written as 24 x 52 x 325,7811 = 130,312,400

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


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