Q: What are the prime factors of the number 161,272,624?

 A: 2, 313, 32203

Why are those the prime factors of the number 161,272,624?

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 161,272,624

161,272,624
Factor Arrows
280,636,312
Factor Arrows
240,318,156
Factor Arrows
220,159,078
Factor Arrows
210,079,539
Factor Arrows
31332,203

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, 313, 32203

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 313 x 32,203 = 161,272,624

This can also be written as 24 x 3131 x 32,2031 = 161,272,624

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


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