A376910 Numbers k such that 85*10^k+1 is prime.

2, 11, 47, 50, 66, 122, 302, 4016, 14358, 17424, 21902, 52961

Offset

1,1

Comments

If it exists, a(13)>100000.

Links

Table of n, a(n) for n=1..12.

Crossrefs

Cf. A376850.

Sequence in context: A292533 A140305 A229019 * A142346 A106980 A089682

Adjacent sequences: A376907 A376908 A376909 * A376911 A376912 A376913

Keyword

nonn,hard,more

Author

Hugo Pfoertner, Oct 10 2024

Extensions

a(12) from Michael S. Branicky, Oct 11 2024

Status

approved