PUMaC 2025 · 数论（B 组） · 第 2 题
PUMaC 2025 — Number Theory (Division B) — Problem 2
题目详情
- For a prime p , let ν ( n ) denote the largest nonnegative integer k such that p divides n . For p example, ν (9) = 2, ν (12) = 2, and ν (12) = 0. Find the number of odd primes p less than 3 2 5 p 2 p 100 such that ν (2 − 1) = ν (2 − 1) − ν (2) . p p p 2
解析
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Original Explanation
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