Q: What are the prime factors of the number 85,670,352?

 A: 2, 3, 61, 3251

Why are those the prime factors of the number 85,670,352?

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 85,670,352

85,670,352
Factor Arrows
242,835,176
Factor Arrows
221,417,588
Factor Arrows
210,708,794
Factor Arrows
25,354,397
Factor Arrows
31,784,799
Factor Arrows
3594,933
Factor Arrows
3198,311
Factor Arrows
613,251

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, 61, 3251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 61 x 3,251 = 85,670,352

This can also be written as 24 x 33 x 611 x 3,2511 = 85,670,352

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


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