login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A318194 Numbers k such that 467*2^k+1 is prime. 0
19, 247, 547, 1783, 3475, 10987, 23599, 266899, 387139, 785695 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600

Y. Gallot, Proth.exe: Windows Program for Finding Large Primes

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Eric Weisstein's World of Mathematics, Proth Prime

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

MATHEMATICA

Select[Range[1000], PrimeQ[467*2^# + 1] &]

CROSSREFS

Sequence in context: A019512 A025927 A224180 * A019443 A021229 A021464

Adjacent sequences:  A318191 A318192 A318193 * A318195 A318196 A318197

KEYWORD

nonn,more,hard

AUTHOR

Robert Price, Jan 07 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 17 06:41 EDT 2019. Contains 327119 sequences. (Running on oeis4.)