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A181680 Primes p such that (p-1)/2, (p-2)/3, (p-3)/4, (p-4)/5 and (p-5)/6 are prime numbers. 0
7224839, 9339119, 10780559, 42464519, 45652319, 53464319, 62198639, 69899759, 94159799, 121136399, 130777919, 158608799, 191010959, 285785639, 288308159, 322461719, 353256119, 402411239, 423803519 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..19.

MATHEMATICA

Select[Prime[Range[20000000]], PrimeQ[(#-1)/2]&&PrimeQ[(#-2)/3]&&PrimeQ[(#-3)/4]&&PrimeQ[(#-4)/5]&&PrimeQ[(#-5)/6]&]

CROSSREFS

Cf. A168453

Sequence in context: A288481 A286010 A184214 * A253469 A325606 A157378

Adjacent sequences:  A181677 A181678 A181679 * A181681 A181682 A181683

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 17 2010

EXTENSIONS

Edited, terms checked and two terms added by Klaus Brockhaus, Nov 17 2010

STATUS

approved

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Last modified January 16 00:05 EST 2021. Contains 340195 sequences. (Running on oeis4.)