Q: What are the prime factors of the number 86,841,168?

 A: 2, 3, 17, 31, 3433

Why are those the prime factors of the number 86,841,168?

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 86,841,168

86,841,168
Factor Arrows
243,420,584
Factor Arrows
221,710,292
Factor Arrows
210,855,146
Factor Arrows
25,427,573
Factor Arrows
31,809,191
Factor Arrows
17106,423
Factor Arrows
313,433

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, 17, 31, 3433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 17 x 31 x 3,433 = 86,841,168

This can also be written as 24 x 31 x 171 x 311 x 3,4331 = 86,841,168

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


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