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erdős #459

← #458 · #460 → (packet.json; erdosproblems.com)

Let be the largest such that no is composed entirely of primes dividing . Estimate .

Worked, still open.

number theory · solved · 0 attempts

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oeis

A289280 — a(n) is the least integer k > n such that any prime factor of k is also a prime factor of n.4,9,8,25,8,49,16,27,16,121,16,169,16,25,32,289,24,361,25,27,32,529,27,125,32,81,32,841,32,961,64,81,64,49,48,1369,64,81,

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vela reproduce examples/erdos-problems
  • packet.json · sha256 fc535c4662ffeff69b21a99545233d521a4fcf2d55883eb78ec86f3b30b5aa21

finding.noted · reviewer:will-blair · 1 day

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