Q: What are the prime factors of the number 47,402,124?

 A: 2, 3, 7, 11, 29, 61

Why are those the prime factors of the number 47,402,124?

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 47,402,124

47,402,124
Factor Arrows
223,701,062
Factor Arrows
211,850,531
Factor Arrows
33,950,177
Factor Arrows
7564,311
Factor Arrows
1151,301
Factor Arrows
291,769
Factor Arrows
2961

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, 29, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 11 x 29 x 29 x 61 = 47,402,124

This can also be written as 22 x 31 x 71 x 111 x 292 x 611 = 47,402,124

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


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