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A104372
Primes of the form A104350(k) + 1.
9
2, 3, 7, 13, 61, 181, 2521, 7561, 415801, 1247401, 1099944846001, 146100174169950001, 1156675078903494150001, 750321420485151941966263672363958662088980270355720625000001
OFFSET
1,1
LINKS
MATHEMATICA
Select[FoldList[Times, Array[FactorInteger[#][[-1, 1]] &, 100]] + 1, PrimeQ] (* Amiram Eldar, Apr 08 2024 *)
PROG
(PARI) gpf(n) = {my(p = factor(n)[, 1]); if(n == 1, 1, p[#p]); }
lista(nmax) = {my(r = 1); for(k = 1, nmax, r * = gpf(k); if(isprime(r+1), print1(r+1, ", "))); } \\ Amiram Eldar, Apr 08 2024
CROSSREFS
Intersection of A104365 and A000040.
Sequence in context: A104366 A104367 A104365 * A092969 A089136 A092965
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Mar 06 2005
EXTENSIONS
a(14) from Amiram Eldar, Apr 09 2024
STATUS
approved