Problem 46099. Identify full reptend primes

Cody Problem 273, which is based on Project Euler Problem 26, introduced me to full reptend primes. If p is a full reptend prime, then 1/p has a period of p-1. That is, the decimal expansion of 1/p has strings of p-1 digits that repeat. The first five full reptend primes are 7, 17, 19, 23, and 29.
Write a function that determines whether the input is a full reptend prime.
Solve

Solution Stats

22.58% Correct | 77.42% Incorrect
Last Solution submitted on Nov 15, 2025

Solution Comments

Show comments

Problem Recent Solvers21

Suggested Problems

More from this Author316

Problem Tags

number theory primes

Community Treasure Hunt

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

Start Hunting!