Q: What are the prime factors of the number 87,742,152?

 A: 2, 3, 19, 31, 2069

Why are those the prime factors of the number 87,742,152?

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 87,742,152

87,742,152
Factor Arrows
243,871,076
Factor Arrows
221,935,538
Factor Arrows
210,967,769
Factor Arrows
33,655,923
Factor Arrows
31,218,641
Factor Arrows
1964,139
Factor Arrows
312,069

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, 19, 31, 2069

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 19 x 31 x 2,069 = 87,742,152

This can also be written as 23 x 32 x 191 x 311 x 2,0691 = 87,742,152

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


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