The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A050575

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A050575

Numbers n such that 99*2^n-1 is prime.
(history; published version)

#18 by N. J. A. Sloane at Thu Jan 17 10:08:17 EST 2019

LINKS

Kosmaj, <a href="http://www.15k.org/riesellist.htmhtml">Riesel list k<300</a>.

Discussion

Thu Jan 17

10:08

OEIS Server: https://oeis.org/edit/global/2790

#17 by N. J. A. Sloane at Thu Dec 20 14:03:04 EST 2018

LINKS

Ray Ballinger and Wilfrid Keller, <a href="http://www.prothsearch.com/rieselriesel1.html">List of primes k.2^n + 1 for k < 300</a>

Discussion

Thu Dec 20

14:03

OEIS Server: https://oeis.org/edit/global/2778

#16 by N. J. A. Sloane at Thu Dec 13 17:03:42 EST 2018

LINKS

Ray Ballinger and Wilfrid Keller, <a href="http://web.archive.org/web/20161028080239/http://www.prothsearch.netcom/riesel.html">List of primes k.2^n + 1 for k < 300</a>

Discussion

Thu Dec 13

17:03

OEIS Server: https://oeis.org/edit/global/2777

#15 by N. J. A. Sloane at Wed Dec 12 07:58:05 EST 2018

LINKS

Wilfrid Keller, <a href="http://web.archive.org/web/20161028021640/http://www.prothsearch.netcom/riesel2.html">List of primes k.2^n - 1 for k < 300</a>

Discussion

Wed Dec 12

07:58

OEIS Server: https://oeis.org/edit/global/2776

#14 by Charles R Greathouse IV at Tue Jun 13 11:08:20 EDT 2017

STATUS

editing

approved

#13 by Charles R Greathouse IV at Tue Jun 13 11:08:06 EDT 2017

PROG

(PARI) is(n)=ispseudoprime(99*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017

STATUS

approved

editing

#12 by N. J. A. Sloane at Thu Mar 02 11:38:04 EST 2017

LINKS

Ray Ballinger and Wilfrid Keller, <a href="http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html">List of primes k.2^n + 1 for k < 300</a>

Discussion

Thu Mar 02

11:38

OEIS Server: https://oeis.org/edit/global/2607

#11 by N. J. A. Sloane at Thu Mar 02 11:36:12 EST 2017

LINKS

Wilfrid Keller, <a href="http://web.archive.org/web/20161028021640/http://www.prothsearch.net/riesel2.html">List of primes k.2^n - 1 for k < 300</a>

Discussion

Thu Mar 02

11:36

OEIS Server: https://oeis.org/edit/global/2606

#10 by Russ Cox at Fri Mar 30 16:48:37 EDT 2012

AUTHOR

_N. J. A. Sloane (njas(AT)research.att.com), _, Dec 29 1999

Discussion

Fri Mar 30

16:48

OEIS Server: https://oeis.org/edit/global/110

#9 by Russ Cox at Sun Jul 10 18:38:05 EDT 2011

LINKS

<a href="/Sindx_index/Pri.html#riesel">Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime</a>

Discussion

Sun Jul 10

18:38

OEIS Server: https://oeis.org/edit/global/72