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-   Sierpinski/Riesel Base 5 (https://www.mersenneforum.org/forumdisplay.php?f=54)
-   -   S/R Base 5 Primes reported in 2017+ (https://www.mersenneforum.org/showthread.php?t=23446)

 pinhodecarlos 2022-02-19 12:15

Congratulations Dr. Ryan.

 kar_bon 2022-06-16 13:02

One down for the Riesel-base 5 conjecture:

[url='https://primes.utm.edu/primes/page.php?id=134054']64598 * 5^3769854-1[/url] is prime, 2,635,020 digits, found on 2022-06-14 by PrimeGrid.

Curious: the 5 digits of the k-value appear also in the n-value.

Awaiting official announcement, still some tasks open for this k.

 rudy235 2022-06-17 03:40

[QUOTE=kar_bon;607981]One down for the Riesel-base 5 conjecture:

[url='https://primes.utm.edu/primes/page.php?id=134054']64598 * 5^3769854-1[/url] is prime, 2,635,020 digits, found on 2022-06-14 by PrimeGrid.

Curious: the 5 digits of the k-value appear also in the n-value.

Awaiting official announcement, still some tasks open for this k.[/QUOTE]

Congratulations!
This is the 97th prime with between 2 million and 3 million digits.

There are 10 primes in total (in that range) of the form k* 5^n +/- 1. (8 with -1 and 2 with +1)

 gd_barnes 2022-06-20 10:05

[QUOTE=kar_bon;607981]One down for the Riesel-base 5 conjecture:

[URL="https://primes.utm.edu/primes/page.php?id=134054"]64598 * 5^3769854-1[/URL] is prime, 2,635,020 digits, found on 2022-06-14 by PrimeGrid.

Curious: the 5 digits of the k-value appear also in the n-value.

Awaiting official announcement, still some tasks open for this k.[/QUOTE]
Even more curious: The digits 3 through 9 all occur 1 time in the n-value.

 pepi37 2022-06-20 21:59

And there is new one :)

[URL]https://primes.utm.edu/primes/page.php?id=134068[/URL]

63838 *5^3887851-1

2717497 digits, current 99 rank

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