Q: What are the prime factors of the number 177,445,170?

 A: 2, 3, 5, 7, 40237

Why are those the prime factors of the number 177,445,170?

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 177,445,170

177,445,170
Factor Arrows
288,722,585
Factor Arrows
329,574,195
Factor Arrows
39,858,065
Factor Arrows
51,971,613
Factor Arrows
7281,659
Factor Arrows
740,237

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, 40237

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 7 x 7 x 40,237 = 177,445,170

This can also be written as 21 x 32 x 51 x 72 x 40,2371 = 177,445,170

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


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