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A167734

Primes that becomes a square when prefixed with a 1.

521, 10889, 23201, 27449, 31769, 36161, 45161, 54449, 78929, 99809, 1148921, 1229201, 1309769, 1431161, 2047841, 2257001, 2299049, 2467961, 2595401, 2680721, 2766329, 2809241, 2895281, 2938409, 3024881, 3329801, 3417569, 3461561

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OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..59

MATHEMATICA

Select[Prime[Range[1000]], IntegerQ[Sqrt[FromDigits[Join[{1}, IntegerDigits[#]]]]]&] (* G. C. Greubel, Jun 23 2016 *)

CROSSREFS

Cf. A167735, A167736, A167737, A167738, A167739, A167740, A167741.

Sequence in context: A004948 A138063 A324630 * A122715 A153180 A173656

Adjacent sequences: A167731 A167732 A167733 * A167735 A167736 A167737

KEYWORD

base,nonn

AUTHOR

Claudio Meller, Nov 10 2009

EXTENSIONS

More terms from Michel Marcus, Aug 05 2013

STATUS

approved