Q: What are the prime factors of the number 211,155,714?

 A: 2, 3, 7, 11, 43, 1181

Why are those the prime factors of the number 211,155,714?

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 211,155,714

211,155,714
Factor Arrows
2105,577,857
Factor Arrows
335,192,619
Factor Arrows
311,730,873
Factor Arrows
33,910,291
Factor Arrows
7558,613
Factor Arrows
1150,783
Factor Arrows
431,181

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, 11, 43, 1181

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7 x 11 x 43 x 1,181 = 211,155,714

This can also be written as 21 x 33 x 71 x 111 x 431 x 1,1811 = 211,155,714

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


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