A322606 Primes of form 9753197531... .

97, 9753197, 97531975319, 97531975319753197, 975319753197531975319

Offset

1,1

Comments

The next term is too large to include.

The next term has 127 digits and there are no additional terms up to 2000 digits. - Harvey P. Dale, Jul 13 2021

Links

Seiichi Manyama, Table of n, a(n) for n = 1..6

Mathematica

Select[Table[FromDigits[PadRight[{}, n, {9, 7, 5, 3, 1}]], {n, 30}], PrimeQ] (* Harvey P. Dale, Jul 13 2021 *)

Prog

(PARI) for(n=2, 1e3, if(isprime(t=10^n*97531\99999), print1(t", "))) \\ Charles R Greathouse IV, Dec 09 2024

Crossrefs

Subsequence of A030096.

Cf. A322517.

Sequence in context: A338779 A209475 A186167 * A145309 A122128 A114430

Adjacent sequences: A322603 A322604 A322605 * A322607 A322608 A322609

Keyword

nonn,base

Author

Seiichi Manyama, Dec 20 2018

Status

approved