18th Century Mathematics
By admin • Feb 15th, 2008 • Category: Interesting Facts
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Mathematicians of XVIIIth century proved that numbers 31; 331; 3331; 33331; 333331; 3333331; 33333331 are primes. It was a big temptation to think that all numbers of such kind are primes. But the next number is not a prime.
333333331 = 17 * 19607843
