A136350 Primorial numbers #p such that (#p)-1 is composite.

210, 510510, 9699690, 223092870, 6469693230, 200560490130, 7420738134810, 13082761331670030, 614889782588491410, 32589158477190044730, 1922760350154212639070, 117288381359406970983270

Offset

1,1

Comments

This sequence is different from A121069 and A002110.

Links

Table of n, a(n) for n=1..12.

Formula

{A002110(j): A002110(j)-1 in A002808}. - R. J. Mathar, Jul 23 2008

Example

a(1)=210 because 209=A002110(4)-1 is not prime.

Crossrefs

Cf. A136349, A136351, A136352, A002110, A121069.

Sequence in context: A353111 A229671 A134236 * A068297 A196887 A028677

Adjacent sequences: A136347 A136348 A136349 * A136351 A136352 A136353

Keyword

easy,nonn

Author

Enoch Haga, Dec 25 2007

Extensions

Edited and extended by R. J. Mathar, Jul 23 2008

Status

approved