Q: What are the prime factors of the number 301,778,568?

 A: 2, 3, 7, 13, 1181

Why are those the prime factors of the number 301,778,568?

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 301,778,568

301,778,568
Factor Arrows
2150,889,284
Factor Arrows
275,444,642
Factor Arrows
237,722,321
Factor Arrows
312,574,107
Factor Arrows
34,191,369
Factor Arrows
31,397,123
Factor Arrows
7199,589
Factor Arrows
1315,353
Factor Arrows
131,181

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, 7, 13, 1181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 7 x 13 x 13 x 1,181 = 301,778,568

This can also be written as 23 x 33 x 71 x 132 x 1,1811 = 301,778,568

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


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