Prime Curios!: 647

647
(another Prime Pages' Curiosity)

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A man described as looking like a plump Moses asked the following questions during a 1987 joint American Mathematical Society/Mathematical Association of America conference in San Antonio, Texas: "What about 647? Is it prime?" (from The Man Who Loved Only Numbers by Paul Hoffman)

Submitted: 2009-03-03 19:43:28; Last Modified: 2009-05-11 22:04:19.