a python 3 program for say if thats number is a first number

firstnumber.py

# define the basic variable
stop = False

# make an function for gets all factors of an number
def getFactors(n):
    # create an empty list for factors
    factors=[];

    # loop over all factors
    for i in range(1, n + 1):
        if n % i == 0:
            factors.append(i)

    # return the list of factors
    return factors

# make an function for says if a number is a first number
def isAFirstNumber(num):
    if 1 and num in getFactors(num):
        if len(getFactors(num)) == 2:
            return str(num) + " is a first number!"
        else:
            return str(num) + " is not a first number..."
    else:
        return "nope"


while stop == False:
    try:
        try:
            intet = int(input("Type a number> "))
        except ValueError:
            print("I DON'T KNOW THIS!!!")
            continue
        if intet == "":
            print("Type really a number, please!")
        else:
            print(isAFirstNumber(int(intet)))
    except KeyboardInterrupt:
        print("Goodbye!")
        stop = True