Problem 52639. Determine whether a number is unprimeable

The number 204 is unprimeable because no single digit can be changed to make it prime. In contrast, the number 207 is not unprimeable because changing the first digit to 0, 1, 3, 6, or 9 or the second digit to 2, 5, or 7 would make it prime.
Write a function to determine whether the input number is unprimeable.
Solve

Solution Stats

54.55% Correct | 45.45% Incorrect
Last Solution submitted on Sep 12, 2024

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers15

Suggested Problems

More from this Author281

Problem Tags

primes project euler

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!