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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A323196 Numbers k such that 453*2^k+1 is prime. 1
1, 10, 16, 18, 21, 33, 37, 48, 57, 66, 96, 108, 133, 198, 262, 480, 550, 673, 858, 988, 1065, 1576, 1737, 1756, 1920, 2362, 2860, 2917, 4666, 5988, 6598, 11206, 14326, 28317, 37158, 53617, 53896, 63925, 80022, 125992, 186325, 211897, 318880, 428428, 443212 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Robert Price, Table of n, a(n) for n = 1..49

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[453*2^# + 1] &]

CROSSREFS

Sequence in context: A104869 A104868 A103208 * A187797 A192221 A106695

Adjacent sequences:  A323193 A323194 A323195 * A323197 A323198 A323199

KEYWORD

nonn,hard

AUTHOR

Robert Price, Jan 06 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 May 23 18:45 EDT 2019. Contains 323528 sequences. (Running on oeis4.)