Q: What are the prime factors of the number 47,001,248?

 A: 2, 7, 37, 53, 107

Why are those the prime factors of the number 47,001,248?

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 47,001,248

47,001,248
Factor Arrows
223,500,624
Factor Arrows
211,750,312
Factor Arrows
25,875,156
Factor Arrows
22,937,578
Factor Arrows
21,468,789
Factor Arrows
7209,827
Factor Arrows
375,671
Factor Arrows
53107

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, 7, 37, 53, 107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 37 x 53 x 107 = 47,001,248

This can also be written as 25 x 71 x 371 x 531 x 1071 = 47,001,248

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


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