@TheCoiledViper/

# Prime Number Generator

## No description

Files
• main.py
main.py
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```
```import math
import sys
import time

magenta = '\u001b[35m'
cyan = '\u001b[36m'
red = '\u001b[31m'

def typer(words):
for char in words:
if char == "":
sys.stdout.write(char)
sys.stdout.flush()
else:
sys.stdout.write(char)
sys.stdout.flush()

def get_primes(n):
m = n+1
numbers = [True for i in range(m)]
for i in range(2, m):
for j in range(i*i, m, i):
numbers[j] = False
primes = []
for i in range(2, m):
if numbers[i] == True:
primes.append(i)
print(cyan + "\nSieve of Eratosthenes Method
- The Prime Numbers Up To " + str(upperlimit) + ": \n\n" + str(primes))

def isprime(x):
for y in range(2,x):
if (x%y == 0):
return False
break
return True

typer("Welcome to the Prime Number Generator! Created by TheCoiledViper.\n")

while True:
try:
mode = int(input(magenta + "\n1. Print All Prime Numbers Up to a Given Number.\n2. See If a Single Number is Prime.\n   Enter Your Choice (1/2): "))
if mode > 2:
print(red + "   Nice try! Enter a Valid Number!")
else:
break
except ValueError:
print(red + "   Enter a Valid Option!")
continue

if mode == 1:
while True:
try:
while True:
primemethod = int(input(cyan + "\n   -Printing Prime Numbers-\n1. Brute Force Method\n2. Sieve of Eratosthenes Method\n   Enter Your Choice (1/2): "))
break
except ValueError:
print(red + "   Enter A Valid Option!")
continue
if primemethod == 1:
while True:
try:
upperlimit = int(input(magenta + "\nEnter the Upper Limit for the Prime Number Generator: "))
break
except ValueError:
print(red + "Enter a Valid Integer!")
continue

print(cyan + "\nBrute Force Method - The Prime Numbers Up To " + str(upperlimit) +":")
bruteforceprime = []
for i in range(2,upperlimit + 1):
if (isprime(i)):
bruteforceprime.append(i)
print (bruteforceprime)

elif primemethod == 2:
while True:
try:
upperlimit = int(input(magenta + "\nEnter the Upper Limit for the Prime Number Generator: "))
break
except ValueError:
print(red + "Enter a Valid Integer!")
continue
get_primes(upperlimit)

else:
print(red + "   Enter a Valid Option!")
continue

elif mode == 2:
while True:
while True:
try:
testnumber = int(input(magenta + "\n-Prime Number Testing-\nEnter an Integer Which you Would Like to Test: "))
break
except ValueError:
print(red + "Enter a Valid Integer!")
continue
if (testnumber >= 2):
if (isprime(testnumber)) == True:
print(cyan + str(testnumber) + " is a Prime Number!")
elif (isprime(testnumber)) == False :
print(cyan + str(testnumber) + " is NOT a Prime Number!")
else:
print(cyan + str(testnumber) + " is NOT a Prime Number!")
continue

```