Q: What are the prime factors of the number 653,616,400?

 A: 2, 5, 31, 52711

Why are those the prime factors of the number 653,616,400?

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 653,616,400

653,616,400
Factor Arrows
2326,808,200
Factor Arrows
2163,404,100
Factor Arrows
281,702,050
Factor Arrows
240,851,025
Factor Arrows
58,170,205
Factor Arrows
51,634,041
Factor Arrows
3152,711

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, 31, 52711

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 31 x 52,711 = 653,616,400

This can also be written as 24 x 52 x 311 x 52,7111 = 653,616,400

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


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