269 (two hundred
ndsixty-nine) is the natural number between
268
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Year 268 ( CCLXVIII) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Paternus and Egnatius (or, less frequently, year 1021 ...
and
270. It is also a
prime number
A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...
.
In mathematics
269 is a
twin prime
A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin p ...
,
and a
Ramanujan prime.
It is the largest prime factor of 9! + 1 = 362881,
and the smallest natural number that cannot be represented as the
determinant
In mathematics, the determinant is a scalar value that is a function of the entries of a square matrix. It characterizes some properties of the matrix and the linear map represented by the matrix. In particular, the determinant is nonzero if a ...
of a 10 × 10
(0,1)-matrix.
In media
* "
Hawkmoon 269", pop song by
U2
See also
*
Area code 269
Area code 269 is the telephone area code serving the southwest portion of Michigan's Lower Peninsula of Michigan, Lower Peninsula.
History
''269'' was created as a split of area code 616 on July 13, 2002. The 269 area covers roughly the lower ...
*
Calf 269, animal liberation movement
*
List of highways numbered 269
References
Integers
{{Num-stub