Q: What are the prime factors of the number 352,155,520?

 A: 2, 5, 193, 2851

Why are those the prime factors of the number 352,155,520?

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 352,155,520

352,155,520
Factor Arrows
2176,077,760
Factor Arrows
288,038,880
Factor Arrows
244,019,440
Factor Arrows
222,009,720
Factor Arrows
211,004,860
Factor Arrows
25,502,430
Factor Arrows
22,751,215
Factor Arrows
5550,243
Factor Arrows
1932,851

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, 193, 2851

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 5 x 193 x 2,851 = 352,155,520

This can also be written as 27 x 51 x 1931 x 2,8511 = 352,155,520

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


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