AERON

Mathematics - WHAT THREE PRIME NUMBERS WHEN MULTIPLIED THE ANSWER IS 231?

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3+ months ago by AERON
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number, prime, numbers, mathematics, answer
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Answers (3)

lord

3,7 and 11

3*7*11 = 231

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PhiBonacci

The digit sum of 231 equals
2 + 3 + 1 = 6
As the digit sum is divisible by 3, this tells you that 231 is divisible by 3:
231 / 3 = 77
And 77, well that's 7 * 11.
So, the set of prime factors of 231 = {3, 7, 11}.

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Jewels Vern

The more common form of the question is "What are prime factors of 231?" The only way to find factors is to test numbers one at a time.

2 - no
3 - 77
4 -
5 -
7 - 11

Answers: 3, 7, 11

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