A322606 Primes of form 9753197531... .

97, 9753197, 97531975319, 97531975319753197, 975319753197531975319

Offset: 1

Author

Seiichi Manyama, Dec 20 2018

Keywords

• nonn
• base

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

Crossrefs

Subsequence of A030096.

Cf. A322517.

Programs

Mathematica

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

PARI

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