Is 93 prime?

1 Answer
EZ as pi
Nov 15, 2016

No, #93# is divisible by 3, it is therefore not prime.

Explanation:

By inspection you should be able to see that #93# is definitely not prime .... it clearly divides by 3!

#93 div 3 = 31#

There are 25 prime numbers less than 100.

Be careful of the following five numbers which are often mistakenly thought to be prime.

#1" "51" "57" "87" "91#

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