Prime Numbers On Python

Prime Numbers On Python

Hello Every one welcome...
Today i show you How to calculate prime number upto N th number
Or How many prime numbers upto N th number

Here make simple code
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and also you find easier compare to it
Post your code

Okay Friends.,..

CODE 1:

# Prime numbers

a = int(input('Enter needed prime number range: '))

prime = []

for i in range(2,a+1):

    for j in range(2,i+1):

        if i % j == 0:

            if i == j:

                prime.append(i)

                break

            else:

                break

print(prime)

print(len(prime)) 

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CODE 2:

# This another method using generators

a = int(input('Enter needed prime number range: '))
def genr(a):
    for i in range(2,a+1):
        for j in range(2,i+1):
            if i % j == 0:
                if i == j:
                    yield i
                    break
                else:
                    break

kar = genr(a)
count = 0
for i in kar:
    print(i,end=' ')
    count += 1

print(f'\nTotal number of prime numbers {count}')

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Note: When using generators functions run time is minimum compared to Code1 .

By
PyKAR