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Smallest overpseudoprime to base 2 (A141232) with n distinct prime factors.
0

%I #25 May 09 2022 10:33:04

%S 2047,13421773,14073748835533

%N Smallest overpseudoprime to base 2 (A141232) with n distinct prime factors.

%C a(5) > 2^64.

%C a(5) <= 1376414970248942474729,

%C a(6) <= 48663264978548104646392577273,

%C a(7) <= 294413417279041274238472403168164964689,

%C a(8) <= 98117433931341406381352476618801951316878459720486433149,

%C a(9) <= 1252977736815195675988249271013258909221812482895905512953752551821.

%Y Cf. A001567, A007011, A141232, A180065, A328665.

%K nonn,bref,more

%O 2,1

%A _Daniel Suteu_, May 07 2022