Q: What are the prime factors of the number 64,306,404?

 A: 2, 3, 71, 139, 181

Why are those the prime factors of the number 64,306,404?

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 64,306,404

64,306,404
Factor Arrows
232,153,202
Factor Arrows
216,076,601
Factor Arrows
35,358,867
Factor Arrows
31,786,289
Factor Arrows
7125,159
Factor Arrows
139181

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, 71, 139, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 71 x 139 x 181 = 64,306,404

This can also be written as 22 x 32 x 711 x 1391 x 1811 = 64,306,404

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


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