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2718281828

2718281828 is the ten-digit sequence that results from writing the mathematical constant e, approximately 2.718281828..., without the decimal point. The full value of e begins 2.718281828459045..., and 2718281828 corresponds to the initial digits of its decimal expansion when the point is omitted. In contexts where the decimal point is not shown, this sequence is sometimes used as a compact representation of e's digits.

e, or Euler's number, is the base of natural logarithms and a fundamental constant in mathematics. It

In education and popular culture, digit strings like 2718281828 are sometimes cited as easy-to-remember representations of

is
irrational
and
transcendental,
meaning
it
cannot
be
expressed
as
a
ratio
of
integers
and
is
not
a
root
of
any
nonzero
polynomial
with
rational
coefficients.
The
number
e
plays
a
central
role
in
calculus,
notably
as
the
base
of
the
exponential
function
e^x,
whose
derivative
is
itself,
and
in
models
of
growth,
decay,
and
compound
interest.
It
also
appears
in
probability,
statistics,
and
differential
equations.
e’s
digit
sequence,
and
they
are
used
in
puzzles,
programming
exercises,
and
demonstrations
of
irrational
numbers.