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113 (number)
113
(
one hundred [and] thirteen
) is the
natural number
following
112
and preceding
114
.
Mathematics
113 is the 30th
prime number
(following
109
and preceding
127
), so it can only be divided by one and itself. 113 is a
Sophie Germain prime
, an
emirp
, an isolated prime, a
Chen prime
and a
Proth prime
as it is a prime number of the form 113 is also an
Eisenstein prime
with no imaginary part and real part of the form . In decimal, this prime is a
primeval number
and a
permutable prime
with
131
and
311
.
113 is a
highly cototient number
and a
centered square number
.
113 is the
denominator
of
355/113
, an accurate approximation to .
is the smallest
generalized Fermat prime
with odd base and .
Other uses
113 is also the
atomic number
of
nihonium
.
A113
is a Pixar recurring inside joke or Easter Egg, e.g.: (
WALL-E
) = (W-A113).
113 is the first full-sized
Bluebird
bus at
Essex North Shore Agricultural and Technical High School
See also
113 (disambiguation)
References
Wells, D.
The Penguin Dictionary of Curious and Interesting Numbers
London: Penguin Group. (1987): 134