An "emirp" ("prime" spelled backward), is a prime number, that is also prime when you reverse its digits, like 13, and 17. Write some code to count how many emirps exists under 1,000. (Ans: 13).← Back to challenges | Lessons
Type your code here:
See your results here:
Show a friend, family member, or teacher what you've done!
Here is a share link to your code: