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1144

1144 is the natural number that follows 1143 and precedes 1145. In mathematics, it is an even, composite integer with prime factorization 2^3 × 11 × 13. This factorization implies it has 16 positive divisors: 1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, and 1144. Its binary representation is 10001111000, and in Roman numerals it is written as MCXLIV.

In broader usage, 1144 denotes the year AD 1144 in the Julian calendar. The year is notable

As a four-digit number, 1144 also appears in discussions of numerals, bases, and number properties, serving as

in
the
history
of
the
Crusades:
the
city
of
Edessa
was
captured
by
Zengi
in
1144,
an
event
that
helped
trigger
the
Second
Crusade.
The
fall
of
Edessa
is
frequently
described
as
a
turning
point
in
medieval
Near
Eastern
and
European
diplomacy
and
military
activity
of
the
era.
Other
contemporaneous
events
in
the
broader
medieval
world
are
less
uniformly
documented,
but
the
year
sits
within
a
period
of
mobile
frontiers,
shifting
loyalties,
and
growing
scholastic
activity
in
various
European
centers.
an
example
of
an
even,
non-prime,
composite
integer
with
a
straightforward
prime
decomposition
and
a
simple
Roman
numeral
form.