Q: What are the prime factors of the number 654,125,056?

 A: 2, 13, 79, 311

Why are those the prime factors of the number 654,125,056?

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 654,125,056

654,125,056
Factor Arrows
2327,062,528
Factor Arrows
2163,531,264
Factor Arrows
281,765,632
Factor Arrows
240,882,816
Factor Arrows
220,441,408
Factor Arrows
210,220,704
Factor Arrows
25,110,352
Factor Arrows
22,555,176
Factor Arrows
21,277,588
Factor Arrows
2638,794
Factor Arrows
2319,397
Factor Arrows
1324,569
Factor Arrows
79311

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, 13, 79, 311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 13 x 79 x 311 = 654,125,056

This can also be written as 211 x 131 x 791 x 3111 = 654,125,056

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


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