olymmath

KöMaL 2018 B4948

    The positive integer nn is said to be chunky if it has a prime factor greater than n\sqrt{n}. For example, 20172017 (a prime number), 2018=2⋅10092018=2\cdot 1009 and 2022=2⋅3⋅3372022=2\cdot3\cdot 337 are chunky, while 2023=7⋅1722023=7\cdot 17^2 is not. How many chunky numbers are there which only have prime factors less than 30?

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