
Curios:
Curios Search:
Participate: 
The year selfeducated Peter Barlow published An Elementary Investigation of the Theory of Numbers. He commented that 2^{30}(2^{31}  1) is the greatest perfect number that will ever be discovered, for, as they are merely curious without being useful, it is not likely that any person will attempt to find one beyond it. Quoted in Conic Sections (Dublin 1993). 1811 is an invertible prime. The product of 1811 and the next two consecutive primes results in a concatenation of two consecutive primes in descending order. [De Geest] Chang and Eng, the most famous set of "Siamese twins," were born in Siam (modern day Thailand) in 1811. The year Italian physicist and lawyer Amedeo Avogrado first determined the volume of one mole of a gas. [Tittle]
(There are 2 curios for this number that have not yet been approved by an editor.)
Prime Curios! © 20002017 (all rights
reserved)
