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A104090
Largest prime <= 5^n.
3
5, 23, 113, 619, 3121, 15619, 78121, 390581, 1953109, 9765619, 48828113, 244140613, 1220703073, 6103515623, 30517578121, 152587890563, 762939453109, 3814697265523, 19073486328109, 95367431640599, 476837158203071, 2384185791015571, 11920928955078089
OFFSET
1,1
FORMULA
a(n) = A007917(A000351(n)). - Paolo Xausa, Oct 29 2024
MATHEMATICA
NextPrime[5^Range[30] + 1, -1] (* Paolo Xausa, Oct 29 2024 *)
PROG
(PARI) g(n, b) = for(x=0, n, print1(precprime(b^x)", "))
KEYWORD
easy,nonn,changed
AUTHOR
Cino Hilliard, Mar 03 2005
STATUS
approved