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A104959 Primes from merging of 3 successive digits in decimal expansion of Cos(1). 1
139, 397, 971, 607, 373, 617, 179, 227, 811, 947, 179, 571, 173, 311, 337, 541, 173, 179, 797, 971, 479, 233, 331, 311, 179, 139, 433, 359, 757, 641, 449, 491, 751, 151, 131, 227, 631, 313, 823, 223, 367, 677, 401, 151, 593, 787, 227, 587, 617, 563, 571 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

The first 15,000 digits of Cos(1) as calculated by Simon Plouffe at WorldWideSchool.org.

MATHEMATICA

Select[FromDigits/@Partition[RealDigits[Cos[1], 10, 500][[1]], 3, 1], PrimeQ[#]&&#>100&] (* Vincenzo Librandi, Apr 24 2013 *)

CROSSREFS

Sequence in context: A142019 A142099 A142680 * A265502 A142563 A142213

Adjacent sequences:  A104956 A104957 A104958 * A104960 A104961 A104962

KEYWORD

nonn,base

AUTHOR

Andrew G. West (WestA(AT)wlu.edu), Mar 30 2005

EXTENSIONS

Changed offset from 0 to 1 by Vincenzo Librandi, Apr 24 2013

STATUS

approved

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Last modified April 8 03:01 EDT 2020. Contains 333312 sequences. (Running on oeis4.)