Immediately after what? More information is needed.
Because it immediately follows another prime number.
... 47, 53, 59 ... As you can see there is no Prime Number 50 in the partial list to the left, unless it is 53?
It is 53
It is 53
If the number is odd, you can immediately eliminate 2.
The prime number which comes immediately before 30 is 29.
2056 is an even number. The only even prime number is 2.
The prime number which comes immediately before 30 is 29.
The number 356 is not prime. You should immediately notice that it is an even number, divisible by two, therefore it cannot be prime. Only odd numbers can be prime.
The Prime Numbers either side of 50 (which is not a prime number) is 47 and 53.Note: 50 is not a prime number because 50 can be divided by 2 and 5 making it a composite number.
A prime number is a number whose only positive integer factors are itself and 1. Since 2056 ends in a 6, you know the number is divisible by 2 and therefore cannot possibly be prime.
The number 435 is a composite number. It is immediately evident that it divides by 5. No, a prime number is a number that can only be divided by 1 and itself. The number 435 can be divided by a lot of numbers like 1, 435, 5, 67, 15, and 29, which means that it is not a prime number.