Prime or Composite?

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551

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Can any number at all go into nineteen, or is it prime?

Is 65 prime or composite?

Is 155 prime or composite?

Guest Jan 26, 2016

edited by Guest Jan 26, 2016

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Best Answer

+10

19 is prime ...divisible by only itself and '1'

65 is NOT prime....divisible by 5, 13

155 is NOT prime.....again divisible by 5 etc....

~jc

Guest Jan 26, 2016

2⁺⁰ Answers

+33661

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19 is, indeed, prime.

Alan Jan 26, 2016

+10

Best Answer

19 is prime ...divisible by only itself and '1'

65 is NOT prime....divisible by 5, 13

155 is NOT prime.....again divisible by 5 etc....

~jc

Guest Jan 26, 2016

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