A104999 - OEIS

A104999

Primes from merging of 3 successive digits in decimal expansion of exp(2).

389, 227, 131, 557, 127, 257, 379, 607, 577, 431, 179, 947, 773, 547, 661, 127, 733, 337, 839, 607, 107, 239, 947, 269, 647, 523, 487, 757, 541, 467, 281, 293, 331, 101, 193, 337, 997, 953, 307, 751, 823, 947, 479, 991, 587, 877, 683, 239, 727, 883, 461

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OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

The first 5,000 digits of exp(2) as calculated by Simon Plouffe at WorldWideSchool.org.

Eric Weisstein, Exponential Functions

MATHEMATICA

Select[FromDigits/@Partition[RealDigits[Exp[2], 10, 500][[1]], 3, 1], #>99&&PrimeQ[#]&] (* Vincenzo Librandi, Apr 26 2013 *)

CROSSREFS

Sequence in context: A234178 A223390 A200970 * A139660 A098078 A160030

Adjacent sequences: A104996 A104997 A104998 * A105000 A105001 A105002

KEYWORD

nonn,base,changed

AUTHOR

Andrew G. West (WestA(AT)wlu.edu), Mar 31 2005

STATUS

approved