Q: What are the prime factors of the number 156,005,880?

 A: 2, 3, 5, 1063, 1223

Why are those the prime factors of the number 156,005,880?

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 156,005,880

156,005,880
Factor Arrows
278,002,940
Factor Arrows
239,001,470
Factor Arrows
219,500,735
Factor Arrows
36,500,245
Factor Arrows
51,300,049
Factor Arrows
1,0631,223

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, 1063, 1223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 1,063 x 1,223 = 156,005,880

This can also be written as 23 x 31 x 51 x 1,0631 x 1,2231 = 156,005,880

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


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