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Old 2021-02-12, 13:18   #891
gd_barnes
 
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May 2007
Kansas; USA

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Big news from PrimeGrid:

9221*2^11392194-1 is prime!!

See: https://primes.utm.edu/primes/page.php?id=131777

This was the 2nd smallest k remaining on the Riesel base 2 effort. Only k=2293 remaining is smaller.

Even better news: It knocks out the same CRUS k remaining for both R2 and R4! It is also far bigger than the previous largest R4 prime. :-)

A hearty congrats to PrimeGrid!
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