def METHOD_NAME(n):
    flag = 0
    if(n > 1):
	    for k in range(2, int(math.sqrt(n)) + 1):
		    if (n % k == 0):
			    flag = 1
		    break
	    if (flag == 0):
		    return True
	    else:
		    return False
    else:
	    return False