Q: What are the prime factors of the number 162,460,416?

 A: 2, 3, 199, 1063

Why are those the prime factors of the number 162,460,416?

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 162,460,416

162,460,416
Factor Arrows
281,230,208
Factor Arrows
240,615,104
Factor Arrows
220,307,552
Factor Arrows
210,153,776
Factor Arrows
25,076,888
Factor Arrows
22,538,444
Factor Arrows
21,269,222
Factor Arrows
2634,611
Factor Arrows
3211,537
Factor Arrows
1991,063

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, 199, 1063

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 2 x 3 x 199 x 1,063 = 162,460,416

This can also be written as 28 x 31 x 1991 x 1,0631 = 162,460,416

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


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