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A066269 Indices of primes in A066268. 7
2, 3, 33 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The 33rd term, prime 16268...99999, contains 759 digits.

Next term is bigger than 150. - Stefan Steinerberger, May 06 2007

LINKS

Table of n, a(n) for n=1..3.

C. Rivera, Primorial product numbers

Eric Weisstein's World of Mathematics, Primorial

MATHEMATICA

Select[Range[65], PrimeQ[Product[Product[Prime[i], {i, 1, n}], {n, 1, #}]-1]&] (* Stefan Steinerberger, Apr 12 2006 *)

CROSSREFS

Cf. A066266, A066267, A066268, A002110, A006939, A006794.

Sequence in context: A041895 A277481 A079883 * A083785 A046487 A062922

Adjacent sequences:  A066266 A066267 A066268 * A066270 A066271 A066272

KEYWORD

nonn,hard,more,bref

AUTHOR

Patrick De Geest, Dec 16 2001

EXTENSIONS

Offset changed from 0 to 1 by Harry J. Smith, Feb 08 2010

STATUS

approved

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Last modified October 19 00:36 EDT 2018. Contains 316327 sequences. (Running on oeis4.)