A032625 -id:A032625 - cp's OEIS frontend

A032663 Primes that are the smallest decimal concatenations of n with n + (0,1,2,3,...).

11, 23, 13, 47, 37, 1217, 17, 29, 19, 211, 313, 617, 113, 619, 317, 419, 521, 421, 523, 827, 727, 223, 2143, 1033, 1741, 227, 127, 229, 331, 433, 131, 233, 739, 1447, 337, 439, 137, 239, 139, 241, 1151, 647, 547, 1861, 347, 449, 349, 653, 149, 251, 151, 859

Offset: 1

Patrick De Geest, May 15 1998

First terms of sequences '11', A030458, A032625-A032632,continued with displacements d > 9.

			6th term is prime 1217: 17 - 12 = displacement 5 (=6-1).

Cf. A032662.

Edited by Charles R Greathouse IV, Apr 30 2010

A105238 Primes concatenated from four consecutive odd numbers.

Original entry on oeis.org

23252729, 77798183, 115117119121, 197199201203, 211213215217, 221223225227, 227229231233, 265267269271, 281283285287, 311313315317, 317319321323, 343345347349, 373375377379, 397399401403, 403405407409, 433435437439

Offset: 1

Jonathan Vos Post, Apr 12 2005

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Cf. A000040, A032625.

Select[FromDigits/@(Flatten[IntegerDigits[#]]&/@Partition[Range[ 1,501,2],4,1]),PrimeQ] (* Harvey P. Dale, Jul 18 2013 *)

For positive n: {Concatenate((2n+1), (2n+3), (2n+5), (2n+7))} Intersect {Primes A000040}.

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A032663 Primes that are the smallest decimal concatenations of n with n + (0,1,2,3,...).

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A105238 Primes concatenated from four consecutive odd numbers.

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