Q: What are the prime factors of the number 66,035,456?

 A: 2, 31, 53, 157

Why are those the prime factors of the number 66,035,456?

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 66,035,456

66,035,456
Factor Arrows
233,017,728
Factor Arrows
216,508,864
Factor Arrows
28,254,432
Factor Arrows
24,127,216
Factor Arrows
22,063,608
Factor Arrows
21,031,804
Factor Arrows
2515,902
Factor Arrows
2257,951
Factor Arrows
318,321
Factor Arrows
53157

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, 31, 53, 157

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 31 x 53 x 157 = 66,035,456

This can also be written as 28 x 311 x 531 x 1571 = 66,035,456

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


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