Modular Monastery

Levels 69–99 · modularCongruence

An ancient monastery where time moves in cycles. Solve congruences, find inverses, and apply Fermat's theorem.

Study Before You Play

Brush up on these topics to sharpen your skills for this zone.

Number Theory Basics

Explore prime numbers, divisibility, GCD, LCM, and modular arithmetic fundamentals.

Understanding Remainders

Modular congruence is built on remainders — master this first.

Number Bases

Binary and modular arithmetic share deep connections in computer science.