268 (number)

← 267 268 269 →
← 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-eight
Ordinal	268th (two hundred sixty-eighth)
Factorization	22 × 67
Divisors	1, 2, 4, 67, 134, 268
Greek numeral	ΣΞΗ´
Roman numeral	CCLXVIII
Binary	1000011002
Ternary	1002213
Senary	11246
Octal	4148
Duodecimal	1A412
Hexadecimal	10C16

268 (two hundred [and] sixty-eight) is the natural number following 267 and preceding 269.

In mathematics

• 268 is an even composite number with two prime factors, ^[1] but one of the prime factors is repeated: 268 = 67*2*2.
• 268 is the smallest number whose product of digits is 6 times the sum of its digits.
• 268 is untouchable which means that it is not the sum of the proper divisors of any number ^[2]
• 268 is the sum of the consecutive primes 131 and 137. ^[3]

In technology

• The area code for 268 is in Antigua and Barbuda. ^[4]
• The country code +268 is the calling code for Eswatini, formerly Swaziland. ^[5]
• MF 268 is a chemical compound with the formula of C28H46N4O3. It reacts at the abiotic site of the enzyme. ^[6]

World records

• YouTuber Hassan Suliman (AboFlah) received 2 world records during a live stream. The first was the longest video live stream with a total length of 268 hours. The second was the most viewers on a charity live stream on youtube with 698000 viewers. ^[7]
• On January 17, 2013, The Procter & Gamble Company received the Guinness World Record for the most people using teeth-whitening strips simultaneously. There were 268 participants. ^[8]
• On December 9, 2012, 268 people were brushing dog’s teeth. It was an event to promote dog’s dental health awareness. ^[9]
• On April 17, 2016, there were 268 people in Hikone, Japan dressed as ninjas. https://www.guinnessworldrecords.com/world-records/95237-largest-gathering-of-people-dressed-as-ninjas
• On June 19, 2011, the lowest score in the golf US Open was achieved by Rory McIlroy. The score was 268 in 72 holes. ^[10]

Other fields

• The calendar years 268 AD and 268 BC.
• In the French Republican calendar, The year 268 would be a year 4 cycle and be in 2060. ^[11]
• 267 is the number for several highways across the countries of Canada, Japan, and the United States.
• 268 Adorea is an asteroid in the asteroid belt. It was discovered by Alphonse Borrelly in Marseilles. It was named after adorea liba which were split cakes made by the Romans as sacrificial offerings. This was controversial because all asteroids before this point were named after people or mythological people. ^[12]

References

1. "Facts about the integer". mathworld.wolfram.com.
2. "Untouchable numbers". mathworld.worfram.com.
3. "Twin prime numbers". mathworld.wolfram.com.
4. "268 area code". researchmeniacs.com.
5. "+268 calling code". www.howtocallabroad.com.
6. Zhu, X. D.; Cuadra, G.; Brufani, M.; Maggi, T.; Pagella, P. G.; Williams, E.; Giacobini, E. (1996). "MF 268 information". Journal of Neuroscience Research. 43 (1): 120–126. doi:10.1002/jnr.490430116. PMID   8838583. S2CID   23423497.
7. Kaddoura, Mohamad (March 3, 2022). "268 hour livestream". www.guinnessworldrecords.com.
8. "268 people using teeth-whitening strips". www.guinnessworldrecords.com.
9. "268 people brushing dog's teeth". www.guinnessworldrecords.com.
10. "268 golf score US Open". www.guinnessworldrecrods.com.
11. "French Republican Calendar Guide" (PDF). broadcast.lds.org.
12. "268 Adorea information". in-the-sky.org.