Practice

Junior Example Problem 2: Palindromic Primes

What are Palindromic Primes?

• A Palindromic Primes is a prime number and it is also a palindrome (it reads the same forwards as backwards).
• For example, 151 is prime and palindrome it reads the same forwards as backwards.

Example

• The palindromic primes between 1 and 150 are

  2

  3

  5

  7

  11

  101

  131

• Note: 1 is not prime.

Instructions

• Write a program that will read in a pair of numbers, then output all palindromatic primes between those two numbers (inclusive).
• This should continue until a pair of zeros is read in.
• Your output should contain each palindromatic prime on a singel line.
• Output sould be in ascending order.
• No other output should be produced by your program other than the numbers.
• Your output should be based in the following input.

Data

Check Your Solution

Step 1.

Attach your source code. DO NOT ATTACH EXECUTABLES

Step 2.

Enter your solution's output in the text area below.

Step 3.

Click below to test your solution

Example Solution

• Problem solution in C++