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A084629 Brilliant numbers such that when they are concatenated with their 10's complement, which also must be brilliant, the result is a prime. 1

%I #8 Dec 15 2017 17:36:22

%S 473,779,22331,30353,47573,53237,57599,66767,68021,75953,81797,96023,

%T 97133,99221,112661,120983,212519,236849,248687,373097,388511,391649,

%U 427319,433793,444359,453689,473699,474689,555641,566081,566207,597953

%N Brilliant numbers such that when they are concatenated with their 10's complement, which also must be brilliant, the result is a prime.

%D J. Earls, Mathematical Bliss, Pleroma Publications, 2009, pages 10-11. [From _Jason Earls_, Nov 21 2009]

%e a(3)=22331 because it is a brilliant number and its 10's complement: 77669 is also brilliant and 2233177669 is prime.

%Y Cf. A078972.

%K base,nonn

%O 1,1

%A _Jason Earls_, Jun 28 2003

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Last modified August 30 19:56 EDT 2024. Contains 375546 sequences. (Running on oeis4.)