Q&A Discussions

Write a program to input a number & find out whether the sum of the digits in the number is a prime number or not.

1st Sep 2017, 4:20 PM

Rohit Raj

java whileloop

2 Votes

hii...any1 tell me...if i want to check prime no...then it will continue to checking untill we don't press any key...in java script...i have wrriten already code to check prime no but that is only one time not fir untill press any key to out of loop..

1st Oct 2017, 9:51 AM

Aaron Stone

javascript

0 Votes

hi can someone help am trying to make a progam that will ask user how many number and it will also list the prime number

22nd Aug 2016, 12:21 PM

Ankita

0 Votes

Guys. Here is a simple challenge from me, how about a program that finds all prime numbers before 100?

20th May 2022, 2:13 PM

ashii

javascript python3

-2 Votes

a program that takes the integer (n) as positive and prints the sum of prime numbers greater than 1 and less than n as output

28th Sep 2017, 7:52 AM

Onejohi

python

0 Votes

How to read an one dimensional array and search which elments was prime or not prime? Thenks for answering :)

26th Dec 2020, 12:16 PM

a.m

0 Votes

I'm trying to make function that generates prime from range [n, 3n] but it's not working and I don't know why..

24th Dec 2016, 2:50 PM

Faroug AS Hashad

c++code math

0 Votes

How to write program detecting if the input is prime it order to insert another to testing . the program stop when ensert 0

8th Dec 2022, 1:06 PM

Kamil Chojnacki

0 Votes

Write a Java Program to enter the range of an array, and print the Fibonacci series till that range. Accept only the prime ele

19th Oct 2020, 12:12 AM

Morsal

java

0 Votes

Enter n positive integers to print out the prime numbers in the sequence and the number of primes and max of all that primes

10th Sep 2022, 5:29 AM

Itz me Ash

0 Votes

i created a programe for printing all prime no between say 1 to 100 now i want to store all that in an array,how to do that?

8th Oct 2019, 2:38 PM

Lalala

arithmetic numbers prime return

0 Votes

5 Answers

10th Aug 2016, 6:43 PM

Tarun kumar parashar

Eratostanes

1 Vote

2. Write a program which takes the lower limit and upper limit then find which of the number are prime number.

26th Sep 2018, 4:37 PM

DazVonHelmet

python

-1 Vote

3rd Dec 2021, 6:49 PM

SAfiullaH KhoKhar

i=2; i<=num/2; ++i

c++forloop loops prime

0 Votes

Getting started - first problems!

25th Sep 2019, 7:52 AM

Dipanjan Basu

help prime problem started

0 Votes

This is the question I m having problem in "write a function sumprimes(l) that takes as input a list of integers and returns the sum of all the prime numbers in l".

15th Jan 2019, 7:19 AM

Maximilian Spall

python

-1 Vote

Getting error that my array might not be initialized. I'm trying contain all prime numbers within a given number into an array.

3rd Aug 2016, 6:15 PM

Vipul Jain

array findprime java

0 Votes

Why is my program stuck in a recursive loo

12th Jul 2017, 3:18 AM

Joseph Nithish

c++factorisation loops math prime recursion

2 Votes

Please could someone explain to me why the second code isn't working out correctly of writing the sum of prime numbers <10

18th Jul 2021, 6:38 AM

Purple Requiem

block scope

1 Vote

Challenge: Mersenne primes

3rd Oct 2017, 5:05 AM

Sammy

c#c++java mersenne number pgp prime python web

8 Votes

14 Answers

29th Aug 2017, 9:03 AM

Luca

Want a way in which the program prints "is not a prime number" only one time and not many times in loop

java javascript web

0 Votes

To print numbers in the right angle pattern with prime numbers is printed as * and the remaining is printed as itself

15th Sep 2019, 11:49 AM

Aquib Shaikh

c python

0 Votes

Help me understand this algorithim

18th Jul 2019, 11:37 AM

Harsha vardhan

algorithim c++math prime prime-numbers

0 Votes

what is wrong with this code ?

4th Jun 2018, 5:17 PM

X-1

checker code error explanation help num prime python

6 Votes

how to find the sum of two numbers that in total will give a prime number( in the list) and print these numbers

15th Aug 2019, 1:47 PM

sujay simha

python3

-2 Votes

Can someone explain how sieve of eratosthenes algorithm works and segmented sieve too?

14th Nov 2019, 5:27 PM

Марсель Халимов

algorithm c++numbers prime

1 Vote

21st Jun 2017, 11:27 AM

Arpit saxena

i=2; i<=num/2; ++i

c++forloop loops prime

0 Votes

Can someone assist me please? I’m stuck (Socket Programming: Number Exchange)

25th Sep 2019, 7:51 AM

Dipanjan Basu

help newbie numbers prime python socket

1 Vote

[HELP] Sum of primes for n ?

16th Oct 2022, 4:38 PM

Malika

algorithm c c++java kotlin php prime python summation

2 Votes

10 Answers

1st Apr 2018, 5:48 PM

Raziul Islam

How can I find a program in java to accept a number from the user and print all the prime factors of the number.

javaprogram primefactors

0 Votes

Write a program to input a number & find out whether the sum of the digits in the number is a prime number or not.

30th May 2017, 1:13 PM

Rishita Singh

java,loop,while

0 Votes

how to write code in c# for this program:-

30th Sep 2017, 5:39 PM

Aaron Stone

c#digits loop prime while

1 Vote

Program for multiple of at least two digits, n, return 1 if n is multiple of at least two digits or return 0,o/p prime number c

27th Nov 2016, 12:41 PM

Deepashri Bharat Barve

-2 Votes

Not (!) operator , how does it really work, secondly how does this method account for prime 5 if n is set to limit of 10?

13th Aug 2017, 11:42 AM

kiruthikaa

javascript

0 Votes

Как создать список из простых чисел

15th Dec 2017, 6:12 AM

Louis McIntosh

arraylist lists numbers prime python python3

1 Vote

What do i have to do here?

31st Mar 2019, 2:36 PM

ZEPHYR

c++code cpp help prime

0 Votes

My program won't run, and I don't understand why..?

17th Jul 2017, 12:20 PM

Hakan Koca

c++error help numbers prime programming

1 Vote

An integer n is prime if its only factors are 1 and itself. Write a code segment for checking whether the value of an int n is

27th Sep 2019, 8:36 PM

Benan Essayed

java

-5 Votes

27th Dec 2021, 7:26 PM

Sweshthika Sureshkumar

Compilation Error...

compilation compiler error java mistake number prime

1 Vote

c++code count optimization prime primenumbers

5th Apr 2018, 9:02 PM

David Wicker

Help optimizing code

0 Votes

Attention ! I need help. I cant understand the following program.

2nd May 2017, 8:02 AM

Naveed

a c c_examples loop number prime using while

1 Vote

array c++factorization forloop help needhelp prime primefactorization stock whileloop

22nd Jun 2020, 8:06 AM

Rakibur Rahman

I need help

0 Votes

whats wrong with this code

18th Oct 2018, 5:53 PM

Filippo Passante

def factor for issue loops prime problem python python3 while

0 Votes