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Curtis Cooper
Curtis Cooper is a professor in the Department of Mathematics and Computer Science at the University of Central Missouri. He created a PrimeNet account on July 6, 1998. On Dec. 15, 2005, he and Steven Boone discovered that 230,402,457-1 is prime; it was the 43rd Mersenne prime ever discovered and the largest known prime of any kind at the time. This record was surpassed on Sept. 4, 2006 when the pair discovered the 44th known Mersenne prime, 232,582,657-1. As of Sept. 15, 2008, his account is ranked #1 on PrimeNet in LL testing, with over 242,000 P90 CPU years. His record as the largest Lucas-Lehmer test has remained strong and as of January 19, 2016, he has almost 19 million GHz-Days of work contributed.
On January 25, 2013, Cooper discovered his third Mersenne prime, 257,885,161-1, the 48th known.
On January 7, 2016, Cooper was again the discover of another world record Mersenne prime, 274,207,281-1, the 49th known. At the time of discovery, he ran Prime95 in five labs of his university on approximately 800 computers.[1]
