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Ralph Ernest Powers
Ralph Ernest Powers (April 27, 1875 – January 31, 1952) was an American amateur mathematician who worked on prime numbers.
==Life==
Details of his life are little-known,〔(Obituary ) by D. H. Lehmer〕 though he appears to have been an employee of the Denver and Rio Grande Western Railroad. However, Powers was apparently the first mathematician to demonstrate that the Mersenne number ''M''107 = 2107 − 1 was indeed prime. This was published in his article ''Certain composite Mersenne's numbers'' in 1916. Sometimes, mathematical textbooks attribute this result to one E. Fauquembergue, but it appears that many of Fauquembergue's claims were later demonstrated as erroneous; thus, many prefer recognizing Powers as the discoverer, including the well-known Internet resource The Prime Pages.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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