Q: What are the prime factors of the number 361,621,200?

 A: 2, 3, 5, 31, 9721

Why are those the prime factors of the number 361,621,200?

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 361,621,200

361,621,200
Factor Arrows
2180,810,600
Factor Arrows
290,405,300
Factor Arrows
245,202,650
Factor Arrows
222,601,325
Factor Arrows
37,533,775
Factor Arrows
51,506,755
Factor Arrows
5301,351
Factor Arrows
319,721

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, 5, 31, 9721

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 31 x 9,721 = 361,621,200

This can also be written as 24 x 31 x 52 x 311 x 9,7211 = 361,621,200

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


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