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URL: https://oeis.org/A120822

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A120822
a(n) consecutive digits ascending beginning with the digit 4 give a prime.
9
OFFSET
1,1
COMMENTS
Digits are in ascending order beginning with 4; after 9 comes 0.
a(4) > 10^5. - Michael S. Branicky, Apr 08 2025
EXAMPLE
8 is a term since 45678901 is a prime.
MATHEMATICA
fQ[n_] := PrimeQ@ FromDigits@ Mod[3+Range@n, 10]; lst = {}; Do[ If[fQ@n, AppendTo[lst, n]; Print@n], {n, 10000}]; lst
KEYWORD
nonn,base,hard,bref,more
AUTHOR
Robert G. Wilson v, Jul 05 2006
STATUS
approved