Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Lucas-Lehmer test results of Mersenne Numbers

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3 Later Factored LL test results

Exponent
User name
Computer name
Residue
Shift count
Error code
#LL
#PRP
Software
Date found
14731Unknown02D603Unknown, (aka U)
14731George Woltman341DCFB0EF4202D603Woltman, Prime95, first web release, (aka W4)
14731Brian J. Beesley341DCFB0EF4202D603Mac, John Sweeney, v1.4, (aka J3)