A124368 Largest prime < 1000000*a(n-1), a(1)=2.

2, 1999993, 1999992999889, 1999992999888999961, 1999992999888999960999949, 1999992999888999960999948999991, 1999992999888999960999948999990999917, 1999992999888999960999948999990999916999963, 1999992999888999960999948999990999916999962999947

Offset: 1

Author

Artur Jasinski, Dec 16 2006

Keywords

• nonn

Crossrefs

Cf. A124262, A126031.

Programs

Mathematica

NestList[NextPrime[1000000#,-1]&,2,10] (* Harvey P. Dale, Jul 21 2021 *)

Extensions

a(9) from Pontus von Brömssen, Jan 15 2025