A066596 Primes which can be expressed as concatenation of powers of 5 and 0's.

5, 11, 101, 151, 251, 1051, 1151, 1511, 2551, 5011, 5051, 5101, 5501, 10111, 10151, 10501, 11251, 11551, 12511, 15101, 15511, 15551, 25111, 50051, 50101, 50111, 50551, 51001, 51151, 51511, 51551, 52501, 52511, 55001

Offset

1,1

Links

Table of n, a(n) for n=1..34.

Example

251 is a term as it is a concatenation of 25 and 1 which are powers of 5.

Crossrefs

Sequence in context: A123025 A053778 A030079 * A199325 A199305 A096473

Adjacent sequences: A066593 A066594 A066595 * A066597 A066598 A066599

Keyword

base,easy,nonn

Author

Amarnath Murthy, Dec 21 2001

Extensions

Corrected and extended by Christopher Lund (clund(AT)san.rr.com), Apr 14 2002

Status

approved