the number 27
...harmless?
Saturday
occurrence 396
Marin Mersenne
was a mathematician. He is mostly known for the
Mersenne Primes
, but also for the Double Mersenne Primes, which have several 27's.
He also wrote twenty-seven books on the Geometry of Pierre de la Ramé.
He studied the mathematics of music and invented (I think)
the twenty-seven key organ
.
Here is another mention of the structure of an organ
from a book
.
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