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primes in python

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Old-fashioned Ostrich answered on August 13, 2021 Popularity 10/10 Helpfulness 7/10

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primes in python

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from math import sqrt
for i in range(2, int(sqrt(num)) + 1):
    if num % i == 0:
        print("Not Prime")
        break
    print("Prime")

# Note: Use this if your num is big (ex. 10000 or bigger) for efficiency
# The result is still the same if the num is smaller

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Contributed on Aug 13 2021

Old-fashioned Ostrich

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is prime python

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def is_prime(n):
    for i in range(2,int(n**0.5)+1):
        if n%i==0:
            return False
    return True

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Contributed on May 04 2022

Mouad En-naciry

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is prime python

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import math
def isPrimeNumber(n):
    if (n < 2):
        return False;
    sq = int(math.sqrt(n))
    for i in range(2, sq + 1):
        if (n % i == 0):
            return False
    return True

Popularity 10/10 Helpfulness 8/10 Language python

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Contributed on Oct 29 2021

Sore Stork

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prime number in python

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def prime_number(n):
    c = 0
    for x in range(2, n):
        if n % x == 0:
            c = c + 1
    return c


n = int(input("Enter a number = "))
if prime_number(n) == 0:
    print("Prime number.")
else:
    print("Not prime number.")

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Contributed on May 10 2022

Excited Earthworm

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prime number in python

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a=int(input('print number:'))
for i in range(2,a):
    if a%i !=0:
        continue
    else:
        print("Its not a prime number")
        break # here break is exicuted then it means else would not be exicuted.
else:
    print("Its a prime number")

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Contributed on Dec 19 2021

Impossible Impala

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prime number program in python

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def prime_number(a):
    for i in range(2,a):
        if a%i == 0:
          return False
    return True
n = int(input("Enter a number = "))
print(prime_number(n))

Popularity 9/10 Helpfulness 6/10 Language python

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Contributed on Aug 13 2022

Anurag Daksh

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prime number in python

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# Python function to check if a number prime or not.
print("Welcome to Prime Number Checker")

def prime_check(number):
    prime = True
    for num in range(2, number):
        if number % num == 0:
            prime = False
    if prime:
        print("It is prime")
    else:
        print("It is not prime")

number_to_check = int(input("Type the number to check: "))
prime_check(number = number_to_check)

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Contributed on Dec 04 2022

Relieved Rattlesnake

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python prime number

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def is_prime(n):
	if n == 0 or n == 1 or n == 4:
		return False
	for i in range(2, int(n/2)):
		if n % i == 0:
			return False
	return True

A relatively "faster" prime check.

It gets noticably slow once it gets to 8+ digits.

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Contributed on Jan 12 2023

OwO People

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primes pytyhon

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def is_prime(n):
    if n in (2, 3):
        return True
    if n <= 1 or not (n%6==1 or n%6==5):
        return False
    a, b= 5, 2
    while a <= n**0.5:
        if not n%a:
            return False
        a, b = a+b, 6-b
    return True
# this method is much faster than checking every number because it uses the fact
# that every prime is either 1 above or 1 below a multiple of 6
# and that if a number has no prime factors, it has no factors at all

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Contributed on May 17 2022

fmoeran

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prime number python program

Comment

#prime number verification program
a=int(input('print number:'))
for i in range(2,a):
    if a%i !=0:
        continue
    else:
        print("Its not a prime number")
        break # here break is exicuted then it means else would not be exicuted.
else:
    print("Its a prime number")#this is out of the for loop suite.

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Contributed on Dec 16 2021

Gr@Y_orphan_ViLL@in##

0 Answers Avg Quality 2/10

primes in python

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