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A129616 10-digit numbers d_1d_2...d_10 such that all the nine numbers d_1...d_i + d_(i+1)...d_10 (0<i<10) are primes. 0

%I #2 Mar 30 2012 17:37:44

%S 1777137770,2240064227,2444402809,5753779594,6464886245,9151995592

%N 10-digit numbers d_1d_2...d_10 such that all the nine numbers d_1...d_i + d_(i+1)...d_10 (0<i<10) are primes.

%C All terms are composite so there is no 10-digit Magnanimous prime.

%H Carlos Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_401.htm">Magnanimous primes</a>.

%e 9151995592 is in the sequence because all the nine numbers 9+151995592, 91+51995592, 915+1995592, 9151+995592, 91519+95592, 915199+5592, 9151995+592, 91519955+92 & 915199559+2 are primes.

%Y Cf. A089392.

%K base,fini,full,nonn

%O 1,1

%A _Farideh Firoozbakht_, May 24 2007

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Last modified May 18 00:50 EDT 2024. Contains 372608 sequences. (Running on oeis4.)