Q: What are the prime factors of the number 818,251,168?

 A: 2, 7, 67, 54521

Why are those the prime factors of the number 818,251,168?

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 818,251,168

818,251,168
Factor Arrows
2409,125,584
Factor Arrows
2204,562,792
Factor Arrows
2102,281,396
Factor Arrows
251,140,698
Factor Arrows
225,570,349
Factor Arrows
73,652,907
Factor Arrows
6754,521

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, 7, 67, 54521

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 67 x 54,521 = 818,251,168

This can also be written as 25 x 71 x 671 x 54,5211 = 818,251,168

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


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