Stage 37 · Beyond (Optional)
37.3.1 Divisibility and Factors
37.3 First Steps in Number Theory: Divisibility, Congruence, and Primes
Point 1 of 5
37.3.1 Divisibility and Factors
Core ideaIf a can be split evenly into parts of size b, we say b divides a, written b∣a, with remainder zero.
Module goal. Starting from divisibility and remainders among the integers, meet the prime numbers as building blocks and congruence as a clock arithmetic, and feel the beauty of pure structure.