A178005 Largest n-digit prime with the most digits equal to 7.

7, 97, 977, 7877, 97777, 787777, 7877777, 77767777, 787777777, 8777777777, 79777777777, 777777779777, 7877777777777, 77777779777777, 778777777777777, 8777777777777777, 77797777777777777, 797777777777777777

Offset

1,1

Comments

Select first for the most 7's, then take the largest.

Links

Table of n, a(n) for n=1..18.

Crossrefs

Cf. A037067, A105977

Sequence in context: A289851 A362472 A242377 * A268706 A030540 A071361

Adjacent sequences: A178002 A178003 A178004 * A178006 A178007 A178008

Keyword

nonn,base

Author

Lekraj Beedassy, May 17 2010

Status

approved