Q: What are the prime factors of the number 351,141,420?

 A: 2, 3, 5, 7, 103, 8117

Why are those the prime factors of the number 351,141,420?

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 351,141,420

351,141,420
Factor Arrows
2175,570,710
Factor Arrows
287,785,355
Factor Arrows
329,261,785
Factor Arrows
55,852,357
Factor Arrows
7836,051
Factor Arrows
1038,117

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, 5, 7, 103, 8117

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 103 x 8,117 = 351,141,420

This can also be written as 22 x 31 x 51 x 71 x 1031 x 8,1171 = 351,141,420

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


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