Q: What are the prime factors of the number 356,541,440?

 A: 2, 5, 83, 839

Why are those the prime factors of the number 356,541,440?

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 356,541,440

356,541,440
Factor Arrows
2178,270,720
Factor Arrows
289,135,360
Factor Arrows
244,567,680
Factor Arrows
222,283,840
Factor Arrows
211,141,920
Factor Arrows
25,570,960
Factor Arrows
22,785,480
Factor Arrows
21,392,740
Factor Arrows
2696,370
Factor Arrows
2348,185
Factor Arrows
569,637
Factor Arrows
83839

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, 5, 83, 839

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 5 x 83 x 839 = 356,541,440

This can also be written as 210 x 51 x 831 x 8391 = 356,541,440

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


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