Mathematicians Of The Day
On this day in 1952, D H Lehmer announced that for n = 2203 and 2281 are Mersenne primes. He was aided by a SWAC computer, with the first result taking 59 minutes. SWAC had been built in 1950 in Los Angeles.
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Quotation of the day
From Jacques Hadamard
Practical application is found by not looking for it, and one can say that the whole progress of civilization rests on that principle.