Prime numbers, vital in mathematics and competitive exams, can be quickly identified using a systematic approach. This method involves checking divisibility by primes up to the square root of the ...

Learn how to work out the factors of a number using a diagrammatic representation and factor trees in this KS3 maths study guide from BBC Bitesize.

While working on correcting tests for a book with the full demonstration of Goldbach's weak conjecture, Helfgott says he began thinking—“maybe for too much time”—about the problem of the ...