The prime numbers less than 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97. The square numbers that are applicable are 1, 4, 9, 16, 25, 49, 64 and 81.
Of these primes, those that can be written as sums of two squares are as follows (with the square numbers in brackets):
There are 35 prime numbers less than 150.
There are 15 prime numbers less than 50
There are 27 prime numbers less than 102.
There are 25 prime numbers less than 100
There is only one even prime number and that is 2 as all over even numbers can be divided by 2 and 2 is not square so there isn't a number less than 100 that is an even prime square number.
Prime numbers less than 30 are 2 3 5 7 11 13 17 19 23 29 Square numbers less than 30 are 1, 4, 9, 16 and 25.
No square number is a prime number, since it has the number you squared as a factor. There are several square numbers less than 100. Just calculate the squares of all numbers, starting with 1, until you reach or pass 100. Then stop.
There are 35 prime numbers less than 150.
The square of a prime number that is less than 10.
They are 239 prime numbers less than 1500.
There are 48 prime numbers less than 220.
There are 27 prime numbers less than 102.
There are 15 prime numbers less than 50
Any number squared except 0 is a perfect square so it follows that prime numbers are less common than perfect squares.
You try dividing it by all prime numbers less than of equal to its square root.
There are 25 prime numbers less than 100
There are 1229 prime numbers that are less than 10000.