Problem 2 - Prime between perfect squares

# Function 1 - Check the existence of a prime between the 2 arguments
def checkPrimeExistence(n1, n2):
    MAX = max(n1, n2)
    MIN = min(n1, n2)
    exists = False
    solution = 0
    for n in range(MIN, MAX+1):
        isPrime = True
        for i in range(2, int(n/2)):
            if n % i == 0:
                isPrime = False
                break
        if isPrime:
            exists = True
            solution = n
    if exists:
        print(str(MIN) + " - " + str(MAX) + " ----> " + str(solution))
        return True
    else:
        print("**********************************************************")
        print("There is no prime between " + str(MIN) + " and " + str(MAX))
        print("**********************************************************")
        return False


# MAIN FUNCTION
limit = 300
for i in range(2, limit):
    n1 = i ** 2
    n2 = (i+1) ** 2
    flag = checkPrimeExistence(n1, n2)
    if flag == False:
        # This means that there is no prime between the 2 limits
        print("Finally, there is no prime between " + str(n1) + "^2 and " + str(n2) + "^2")
        break