A368034 - OEIS

%I #12 Dec 21 2023 21:23:13

%S 23401589677,23401675789,23401675897,23401756789,23401767589,

%T 23401896757,23415780961,23415809761,23415896017,23415897601,

%U 23416017589,23416075789,23417809561,23418095761,23475601789,23475809761,23476018957,23540176789,23540178967,23541601789

%N Pandigital primes that are the concatenation of 7 primes.

%C To be prime, a pandigital must use at least 11 digits. There are 4397 pandigital primes with 11 digits that can be cut into 7 prime-chunks.

%H Éric Angelini, <a href="https://cinquantesignes.blogspot.com/2023/12/six-prime-chunks.html">Six prime chunks</a>, Personal blog, December 2023.

%e a(1) = 23401589677 can be cut into the 7 prime-chunks 2,3,401,5,89,67,7;

%e a(2) = 23401675789 can be cut into the 7 prime-chunks 2,3,401,67,5,7,89; etc.

%Y Cf. A368035, A368044, A050288.

%K base,nonn

%O 1,1

%A _Eric Angelini_ and _Giorgos Kalogeropoulos_, Dec 08 2023