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HMMT 十一月 2018 · 冲刺赛 · 第 1 题

HMMT November 2018 — Guts Round — Problem 1

专题
Discrete Math / 离散数学
难度
L3
来源
HMMT

题目详情

  1. [ 5 ] A positive integer is called primer if it has a prime number of distinct prime factors. Find the smallest primer number.
解析
  1. [ 5 ] A positive integer is called primer if it has a prime number of distinct prime factors. Find the smallest primer number. Proposed by: Yuan Yao Answer: 6 A primer number must have at least two distinct prime factors, and 6 will work.