0
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.
Still curious? Ask our experts.
Chat with our AI personalities
Fran
Maxine
Devin
Add your answer:
Earn +20 pts
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
Is 87 composite or prime?
87 is composite. It can be divided by 1 and 87 and 3 and 29.87 is not a Prime number as it can be divided by 3 and 29
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.
