login
Smallest prime factor of prime(n)! / prime(n)# + 1.
3

%I #21 Apr 17 2020 07:19:27

%S 2,2,5,5,11,7,19,31,27893,223,554797,10333,29,61,28652131,293049347,

%T 7731517,1483,73,337809273983,67,440939,1321,94099,89,107,281,

%U 1908113757161297657,479,61,167,3121,177907,5039,11519,281,612153149,587,2753,21491,2897,97,307

%N Smallest prime factor of prime(n)! / prime(n)# + 1.

%H Reinhard Zumkeller, <a href="/A103890/a103890.txt">prime(n)!/prime(n)#+1</a>

%F a(n) = A020639(A103890(n)).

%Y Cf. A020639, A103856, A103890, A103892.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Feb 20 2005

%E a(28)-a(30) from _Amiram Eldar_, Feb 13 2020

%E More terms from _Jinyuan Wang_, Apr 16 2020