Q: What are the prime factors of the number 156,005,888?

 A: 2, 31, 9829

Why are those the prime factors of the number 156,005,888?

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 156,005,888

156,005,888
Factor Arrows
278,002,944
Factor Arrows
239,001,472
Factor Arrows
219,500,736
Factor Arrows
29,750,368
Factor Arrows
24,875,184
Factor Arrows
22,437,592
Factor Arrows
21,218,796
Factor Arrows
2609,398
Factor Arrows
2304,699
Factor Arrows
319,829

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, 9829

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 2 x 31 x 9,829 = 156,005,888

This can also be written as 29 x 311 x 9,8291 = 156,005,888

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


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