#25 Python Tutorial for Beginners | Prime Number in Python

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[BukkaReddy..]

Sir you always simplifies the problems in a very easy way, even a slow learner like me get the logics in first attempt.This is the real quality of great teacher.Thankyou.. Jai Hind🇮🇳

[pannadarao]

x = int (input ("enter your number ? "))
for i in range (2, x):
if x%i==0:
print ('its a non prime number')
break
else:
print ('its a prime number')

[johnhazlett]

Finally, a clear, concise, easily understood explanation for finding prime. Thanx.

[aakashtiwari]

your python series are great sir, thanks for this

[sahebsarkar]

x=int(input("input your number\n"))
for i in range(2, int(x/2+1)):
if(x%i==0):
print("enter number not prime number")
break;
else:
print("enter number is a prime numbere\n")
print("SIR YOU RELAY HELP US SO MUCH SO THANK YOU FOR YOUR EFFORT")

[jitendrakumar-nfxz]

one of the Best star teacher on YouTube hats off to you sir

[jayantakumarpal]

n=int(input("Enter a number"))
c=0
for i in range(1, n+1):
if n%i==0:
c+=1
if c==2:
print("prime")
else:
print("Not prime")

[forsake]

Great Mr Naveen, this is the real trick if you want to be a good programmer..Good job, , , keep doing this, People need to learn.

[k.manideep]

My Prime code, for checking prime number there is no need to run the loop till its number. We an even achieve it by running the loop till (num/2)+1. In this way you can reduce half of the effort. Will be useful while checking for large numbers.


Code :


num = int(input("check number is prime or not :"))
for i in range(2, int(num/2)+1):
if num % i == 0:
print("not prime")
break
else:
print("prime")

[sivakrishna]

if you want to try with function:


def prime(num):
for i in range(2, num):
if num % i == 0:
return "not a prime number"
else:
return "prime number"
num = int(input("enter a number: "))
print(prime(num))

[a.v.n.ssripavan]

Your beginner video's are best in YouTube sir, in this lockdown wanted to be productive and thought of learning python after a lot of playlists and channels your channel has got all the information and tutorial a beginner needs

[snapindia]

n=int(input("enter a number"))
for i in range(2, int(n/2)):
if(n%i==0):
print("not prime")
break
else:
print("prime")

[AbhijitDasTitu]

a = int(input("Enter a number: "))

if a <= 1:
print(a, "is not prime")
else:
for i in range(2, a // 2 + 1):
if a % i == 0:
print(a, "is not prime")
break
else:
print(a, "is prime")



This is the most right python program

[shivan]

to my knowledge this is efficient:)
x=int(input("enter a vlaue"))
for i in range(2, x):
if x%i==0:
print("not a prime")
break
else:
print("is a prime")

[vickysing_n]

count = 0
n = int(input("Enter a number:"))
for i in range(1, n+1):
if n % i == 0:
count +=1
if count == 2:
print(n, "is a Prime number")
else:
print(n, "is Not a Prime number")

[chughprabhkirat]

num = int(input("Enter any number "))
if num>1:
for i in range(2, num):
if num%i==0:
print("Not a prime number.")
break
else:
print('it is a prime number')

else:
print('not a prime number')

[BDIt-vjhk]

n=int(input("enter the value of n"))
if(n==1):
print("it is not prime number")
for i in range(2, n-1):
if(n%i==0):
print("it is not a prime number")
break
else:
print("it is a prime number")

[seanpereira]

Your tutorials makes coding life much more simple :)

[rahul]

Little more optimized..
import math
num = int(input("Enter the number:"))
n = math.floor(math.sqrt(num))
for i in range(2, n + 1, 1):
if num % i == 0:
print("The number is not prime, divisible by", i)
break
else:
print("The number is prime")

[JoyBoy_]

at first i used to hate for loop and while loop and after watching your and seeing the examples i used to love them sir thanks a lot❤️btw i am aman raj😀