Created by StemPy LabA six-digit palindrome reads the same forwards and backwards, like with . How many six-digit palindromes are divisible by ?
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← Two positive integers a > b are fed to the Euclidean algorithm, which divides repeatedly: a by b, then b by the remainder, and so on, until a remainder is 0. It makes exactly 8 divisions, the last one leaving remainder 0. What is the least possible value of a + b?Add the numbers 1¹, 2², 3³ and so on, where the kth term is k raised to the power k, up to 2026²⁰²⁶. What is the units digit of this sum? →
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