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A263392 Riesel numbers that have at least two covering sets. 2

%I #16 Jan 10 2018 03:24:27

%S 66837283,68026001,71344361,71604733,74477159,94270439,97579567,

%T 122606647,140022313,153196541,170969579,182720077,198885523,

%U 211327993,220316413,227116031,280536071,285155137,290419777,292202437,293175191,309240779,324576431,331006603

%N Riesel numbers that have at least two covering sets.

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Riesel_number">Riesel number</a>

%e For every k >= 1, 97579567*2^k - 1 has a divisor in the set {3, 5, 7, 13, 17, 241} and also in the set {3, 5, 13, 17, 97, 241, 257}. 97579567 is therefore in the sequence.

%Y Cf. A101036, A263391.

%K nonn

%O 1,1

%A _Arkadiusz Wesolowski_, Oct 16 2015

%E 1 term inserted by _Arkadiusz Wesolowski_, Aug 28 2016

%E More terms from _Arkadiusz Wesolowski_, Jan 09 2018

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Last modified April 24 19:39 EDT 2024. Contains 371963 sequences. (Running on oeis4.)