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Jul 28, 2020 at 20:34 vote accept Alex
Jul 26, 2020 at 21:10 answer added Jeppe Stig Nielsen timeline score: 1
May 31, 2020 at 23:29 comment added Gerry Myerson See math.stackexchange.com/questions/1683082/… where the question of Sierpinski without covering was discussed (but not settled).
May 31, 2020 at 21:07 comment added Alex Full reference: W.Banks, C.Finch, F.Luca, C.Pomerance, P.Stănică, Sierpiński and Carmichael numbers. Trans. Am. Math. Soc. 367, No. 1, 355-376 (2015).
May 31, 2020 at 20:38 history edited Alex CC BY-SA 4.0
added 64 characters in body
May 31, 2020 at 20:22 comment added Alex Related: Primes in a shifted geometric sequence.
May 31, 2020 at 20:18 history asked Alex CC BY-SA 4.0