Authors: Marius Coman
In this paper I make the following three conjectures on Novák-Carmichael numbers: (1) There exist an infinity of Novák-Carmichael numbers of the form (6k + 1)*(12k + 1)*(18k + 1) – 1; (2) There exist an infinity of Novák-Carmichael numbers of the form (6k - 1)*(12k - 1)*(18k - 1) + 1; (3) There exist an infinity of Novák-Carmichael numbers C such that C + 1 is a Poulet number. See the sequence A124240 in OEIS for Novák-Carmichael numbers (numbers n such that a^n ≡ 1 (mod n) for every a coprime to n).
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[v1] 2017-10-31 03:23:06
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