This number is a prime.
It is alleged, yet unproven, that a monk was killed by a meteorite in Cremona, Italy, in 1511. In algebraic geometry, the problem of describing the Cremona group of spaces in three dimensions and higher has not been settled either. [Sullins]
Smallest emirp whose reversal appears in its Collatz trajectory. [Sariyar]
The USS Arizona had a 1511-man crew during the attack on Pearl Harbor. [Hess]
"The School of Athens" by the Italian Renaissance artist Raphael was completed by 1511.
(There is one curio for this number that has not yet been approved by an editor.)
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