how to check if a number is prime in python
import math
def prime(x):
if x == 2 or x == 3 or x==5:
return True
if x == 1 or x == 4:
return False
num = 2
a= math.sqrt(x)+4
while a > num:
if x % num == 0:
return False
else:
num = num + 1
return Trueprime checker in python
#make the function
#to do this all hte vairibles go in side the function
def CheckIfPrime ():
a1 = input("which number do you want to check")
a = int(a1)#you need the checking number as an int not an str
b = 2 #the number to check againts
c = ("yes")
while b < a:#run the loop
if a%b == 0:#check if the division has a remainder
c = ("no")#set the answer
b = b+1
print(c)#print the output
CheckIfPrime ()#call the functionprimes python
import math
def main():
count = 3
while True:
isprime = True
for x in range(2, int(math.sqrt(count) + 1)):
if count % x == 0:
isprime = False
break
if isprime:
print count
count += 1Copyright © 2021 Codeinu
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