No.
810/30=27
Well.... it actually depends. like 100 divided by 20 is 5 which is a prime. but 200 divided by 50 is four which is four and not a prime number.
Yes. For example, 52 ÷ 4 = 13.
Always.
No.
No, because it can divided by 5. prime numbers can only be divided by one or themselves and result in a whole number
A prime number can only be divided by itself and by 1 and still result in a whole number but 4 can also be divided by 2.
7 is a prime number, that means it can only be divided by itself or 1, with the result being an integer (whole number).
There is no such prime number. If it can be divided by 12 then it is not prime.
If they are prime they can only be divided by one and the number itself but 2 is a prime number and can be divided by itself
No. If you multiply two prime numbers, any prime numbers, the result will - by definition - not be a prime number. For example, if you multiply 2 x 3, the result will obviously be divisible by 2 and by 3, and therefore, not be a prime number. By the way, one is not usually considered a prime number.
No, a nonprime number multiplied by a nonprime number will be a nonprime number.