Q: What are the prime factors of the number 625,566,780?

 A: 2, 3, 5, 1158457

Why are those the prime factors of the number 625,566,780?

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 625,566,780

625,566,780
Factor Arrows
2312,783,390
Factor Arrows
2156,391,695
Factor Arrows
352,130,565
Factor Arrows
317,376,855
Factor Arrows
35,792,285
Factor Arrows
51,158,457

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, 1158457

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 1,158,457 = 625,566,780

This can also be written as 22 x 33 x 51 x 1,158,4571 = 625,566,780

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


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