A068846 Smallest prime with same leading digits as 6^n.

11, 61, 367, 2161, 12967, 77761, 466561, 2799361, 16796161, 100776967, 604661767, 36279705641, 217678233631, 1306069401601, 7836416409623, 47018498457641, 282110990745637, 1692665944473601, 1015599566684161

Offset

0,1

Links

Table of n, a(n) for n=0..18.

Example

a(3)=2161 because this is the smallest prime starting with 6^3=216.

Maple

for i from 0 to 30 do a := nextprime(6^i*10); b := 1; while(a-6^i*10^b>=10^b) do b := b+1; a := nextprime(6^i*10^b); end do; c[i] := a; end do:q := seq(c[i], i=0..30);

Crossrefs

Cf. A068847, A068848.

Sequence in context: A268863 A199414 A156095 * A092164 A354336 A088545

Adjacent sequences: A068843 A068844 A068845 * A068847 A068848 A068849

Keyword

nonn,base

Author

Amarnath Murthy, Mar 10 2002

Extensions

More terms from Sascha Kurz, Mar 17 2002

Status

approved