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Sum of the digits of 87 = 8+7 =15(a multiple of 3) which means that 87 is divisible by 3.
Therefore, 87 is not a Prime number as it has more than two factors which are 1, 87, 3 etc.
In order to prove that a given number is prime we shall show that the given number has more than two factors. There is no need to find all the factors.
Wiki User
∙ 13y ago
Anonymous
why is 95 not a prime number?
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Why isn't 87 a prime number?
87 is not a prime number because 87 is divisible by 3 and 29.
Are 59 and 87 prime numbers?
Well, 59 is a prime number but87 is not a prime number!87 can be divided by more then 1 and itself, (87/3=29)59 cant.So that makes 59 a prime number and 87 is not a prime number!
Why is 87 a prime number?
87 is NOT a prime number. It has factors 3 and 29 aside from 1 and itself.
Write the number 87 as a product of prime factors?
87 = 3 x 29
What numbers can you multiply to get 87?
87 is a prime number, it is only divisible by 1 and itself.
Is 87 a prime nnumber?
87 is NOT a prime number.
Why isn't 87 a prime number?
87 is not a prime number because 87 is divisible by 3 and 29.
Are 59 and 87 prime numbers?
Well, 59 is a prime number but87 is not a prime number!87 can be divided by more then 1 and itself, (87/3=29)59 cant.So that makes 59 a prime number and 87 is not a prime number!
Is a 87 a prime number?
No, the number 87 is composite.
Is 87 prime number or a composite number?
87 is composite.
Is the number 87 prime?
No. 87 / 3 = 29, so it can't be prime.
Why is 87 a prime number?
87 is NOT a prime number. It has factors 3 and 29 aside from 1 and itself.
Is 87 a compasite or a prime number?
87 is composite.
Is 53 and 87 a prime number?
53, yes. 87, no.
What is the greatest prime number that can be multiplied to get 87?
How about: 3*29 = 87
Is the number 87 a prime or composite?
composite
Is 87 prime or composeite?
It is a composite number.
