Q: What are the prime factors of the number 162,450,560?

 A: 2, 5, 43, 5903

Why are those the prime factors of the number 162,450,560?

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 162,450,560

162,450,560
Factor Arrows
281,225,280
Factor Arrows
240,612,640
Factor Arrows
220,306,320
Factor Arrows
210,153,160
Factor Arrows
25,076,580
Factor Arrows
22,538,290
Factor Arrows
21,269,145
Factor Arrows
5253,829
Factor Arrows
435,903

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, 43, 5903

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 43 x 5,903 = 162,450,560

This can also be written as 27 x 51 x 431 x 5,9031 = 162,450,560

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


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