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PrimeGrid News
k=67612 Eliminated from SR5 Conjecture!
On 8 April 2025, 12:49:49 UTC, PrimeGrid?s Sierpi?ski/Riesel Base 5 Problem project eliminated k=67612 by finding the mega prime: 67612*5 5501582 +1The prime is 3,845,446 digits long and enters ?The Largest Known Primes Database? ranked 92nd overall. 27 k?s now remain in the Sierpi?ski Base 5 problem.The discovery was made by Kai Presler (Aperture_Science_Innovators) of Australia using 8 cores of an AMD Ryzen 9 7945HX with 14GB RAM, running Linux Mint 21.3. This computer took about 1 hour, 24 minutes to complete the probable prime (PRP) test using PRST. Kai is a member of team [H]ard|OCP.The PRP was confirmed prime on 8 April 2025, 20:19:10 UTC, by an AMD Ryzen 9 7950X3D @ 4.20GHz with 128GB RAM, running Debian 12.5. This computer, using 4 cores, took 3 hours and 44 minutes to complete the primality test using LLR2.For more details, please see the official announcement.
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