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1087

The number 1087 is a prime number in the decimal system. It is equal to 0x43F in hexadecimal and MLXXXVII in Roman numerals.

In historical terms, the year 1087 CE saw the death of William the Conqueror in Rouen, ending

The period was part of the early post-Conquest era in England and Normandy, when Norman administrative practices

In mathematics, 1087 is a prime number. It is not divisible by any prime number less than

The number is used mainly as a numeric reference in historical dating and in mathematical contexts; outside

his
rule
over
England
and
Normandy.
His
death
led
to
the
succession
of
his
son,
William
II
(Rufus),
who
was
crowned
later
that
year.
were
being
established.
The
Domesday
Book,
a
major
survey
of
lands
and
resources,
was
completed
around
1086,
providing
data
for
governance
and
taxation.
or
equal
to
its
square
root
and
is
congruent
to
3
modulo
4,
meaning
it
cannot
be
expressed
as
the
sum
of
two
squares.
Its
hexadecimal
representation
is
0x43F.
of
those
domains,
it
has
no
widely
recognized
non-numeric
meanings.