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A341804 Primes p dividing (the product of the primes less than p)-1. 3

%I #8 Mar 03 2021 22:04:54

%S 2,5,11,176078293

%N Primes p dividing (the product of the primes less than p)-1.

%C The initial term 2 is included because the empty product minus 1 (which gives zero) is divisible by 2.

%e The prime 11 is included because 2*3*5*7-1 is divisible by 11. Therefore, the last factor of the product, namely 7, is in A341812.

%o (PARI) t=1;forprime(p=2,,((t-1)%p==0)&&print1(p,", ");t*=p)

%Y Cf. A058233, A066735, A341805, A341812.

%K nonn,hard,more

%O 1,1

%A _Jeppe Stig Nielsen_, Feb 20 2021

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Last modified May 29 00:29 EDT 2024. Contains 372921 sequences. (Running on oeis4.)