Q: What are the prime factors of the number 155,217,248?

 A: 2, 23, 31, 6803

Why are those the prime factors of the number 155,217,248?

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 155,217,248

155,217,248
Factor Arrows
277,608,624
Factor Arrows
238,804,312
Factor Arrows
219,402,156
Factor Arrows
29,701,078
Factor Arrows
24,850,539
Factor Arrows
23210,893
Factor Arrows
316,803

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, 23, 31, 6803

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 23 x 31 x 6,803 = 155,217,248

This can also be written as 25 x 231 x 311 x 6,8031 = 155,217,248

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


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