Q: What are the prime factors of the number 85,466,276?

 A: 2, 7, 17, 409, 439

Why are those the prime factors of the number 85,466,276?

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 85,466,276

85,466,276
Factor Arrows
242,733,138
Factor Arrows
221,366,569
Factor Arrows
73,052,367
Factor Arrows
17179,551
Factor Arrows
409439

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, 17, 409, 439

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 17 x 409 x 439 = 85,466,276

This can also be written as 22 x 71 x 171 x 4091 x 4391 = 85,466,276

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


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