A new proof about prime numbers illuminates the subtle relationship between addition and multiplication — and raises hopes for progress on the famous abc conjecture. One morning last November, the ...

Number sequences are sets of numbers that follow a pattern or a rule. Each number in a sequence is called a term. A sequence which increases or decreases by the same amount each time is called a ...

For more than 50 years, the mathematician Neil Sloane has curated the authoritative collection of interesting and important integer sequences. Neil Sloane is considered by some to be one of the most ...