A089760 Smallest prime which is a concatenation of n n-th powers. 1 is considered an n-th power for every value of n.

2, 11, 181, 11161, 1132321, 11172911, 128111111, 1125611111, 11512111111, 1111111102411, 1111111111177147, 11111111531441111, 1111111159432381921111, 11111111114782969111, 1111113276811111111

Offset

1,1

Comments

Most of the terms are a permutation of 2^n or 3^n with (n-1) 1's.

Links

Table of n, a(n) for n=1..15.

Example

a(8) = concatenation of 1,1,2^8,1,1,1,1,1.

Crossrefs

Sequence in context: A271507 A217391 A297601 * A288556 A353930 A295246

Adjacent sequences: A089757 A089758 A089759 * A089761 A089762 A089763

Keyword

base,nonn

Author

Amarnath Murthy, Nov 22 2003

Extensions

More terms from David Wasserman, Oct 05 2005

Status

approved