269 (number)

← 268 269 270 →
← 260 261 262 263 264 265 266 267 268 269 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred sixty-nine
Ordinal	269th (two hundred sixty-ninth)
Factorization	prime
Prime	yes
Greek numeral	ΣΞΘ´
Roman numeral	CCLXIX
Binary	1000011012
Ternary	1002223
Senary	11256
Octal	4158
Duodecimal	1A512
Hexadecimal	10D16

269 (two hundred [and] sixty-nine) is the natural number between 268 and 270. It is also a prime number.

In mathematics

269 is a twin prime,^[1] and a Ramanujan prime.^[2] It is the largest prime factor of 9! + 1 = 362881,^[3] and the smallest natural number that cannot be represented as the determinant of a 10 × 10 (0,1)-matrix.^[4]

In other fields

• Interstate 269 is a highway in Mississippi and Tennessee, opened in 2018.^[5]
• Calf 269 was a calf that rose to fame after being rescued by Israeli activists in 2012.^[6] As a result, numerous people branded the number "269" into their bodies over 2012 and 2013.^[7]
• Missouri Route 269 is a short state highway near Kansas City, Missouri, U.S.^[8]
• +269 is the country code for Comoros, a country off the coast of Africa.^[9]
• Area code 269 is the area code for much of southwest Michigan.^[10]

References

1. Sloane, N. J. A. (ed.). "Sequence A001359 (Lesser of twin primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
2. Sloane, N. J. A. (ed.). "Sequence A104272 (Ramanujan primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
3. Sloane, N. J. A. (ed.). "Sequence A002583 (Largest prime factor of n! + 1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
4. Sloane, N. J. A. (ed.). "Sequence A013588 (Smallest positive integer not the determinant of an n X n 0-1 matrix)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
5. "I-269 corridor finally opens, connecting I-55, I-40". Action News 5. 26 October 2018. Retrieved 27 February 2024.
6. Ahituv, Netta (21 March 2013). "The Israeli Calf That Started a Mass Tattoo Movement". Haaretz.
7. Laylin, Tafline (4 April 2013). "269life Activists Etch and Burn White Calf Branding Number Into Skin". Green Prophet. Archived from the original on 8 April 2013.
8. "Missouri State Route 269: Clay County". www.billburmaster.com.
9. "Comoros (country code +269)" (PDF). www.itu.int. Retrieved 27 February 2024.
10. North American Numbering Plan Administrator (NANPA) (7 August 2001). "616 NPA Split; Creating 269 NPA (Michigan)" (PDF). www.nationalnanpa.com. Retrieved 27 February 2024.

See also

• 269 AD
• 269 BC
• All pages with titles containing 269