Q: What are the prime factors of the number 137,416,448?

 A: 2, 13, 157, 263

Why are those the prime factors of the number 137,416,448?

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 137,416,448

137,416,448
Factor Arrows
268,708,224
Factor Arrows
234,354,112
Factor Arrows
217,177,056
Factor Arrows
28,588,528
Factor Arrows
24,294,264
Factor Arrows
22,147,132
Factor Arrows
21,073,566
Factor Arrows
2536,783
Factor Arrows
1341,291
Factor Arrows
157263

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, 13, 157, 263

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 13 x 157 x 263 = 137,416,448

This can also be written as 28 x 131 x 1571 x 2631 = 137,416,448

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


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