Q: What are the prime factors of the number 102,343,440?

 A: 2, 3, 5, 43, 47, 211

Why are those the prime factors of the number 102,343,440?

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 102,343,440

102,343,440
Factor Arrows
251,171,720
Factor Arrows
225,585,860
Factor Arrows
212,792,930
Factor Arrows
26,396,465
Factor Arrows
32,132,155
Factor Arrows
5426,431
Factor Arrows
439,917
Factor Arrows
47211

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, 5, 43, 47, 211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 43 x 47 x 211 = 102,343,440

This can also be written as 24 x 31 x 51 x 431 x 471 x 2111 = 102,343,440

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


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