266 (two hundred [and] sixty-six) is the natural number following 265 and preceding 267.

• 266 is an even composite number with three prime factors.^[1]
• 266 is a repdigit in base 11. In base 11, 266 is 222.
• 266 is a sphenic number being the product of 3 prime numbers.^[2]
• 266 is a nontotient number which is an even number, not in Euler’s totient function.^[3]
• 266 is an inconsummate number.^[4]

• +266 is the calling code in Lesotho.^[5]
• H.266 or Versatile Video Coding (VVC) is a video compression service. It was created by the Joint Video Experts Team as ITU and was created in 2017. It is designed to handle anywhere between 4k and 16k streaming.^[6]

• On September 10, 2022, Delgadill’s Snow Cap offered 266 milkshake varieties. In support of Route 66, they created 266 flavors of milkshake.^[7]
• On November 2, 2019, the Guinness World Record for the greatest number of people in the shape of a gemstone ring was completed in Kunming, China. There were 266 participants^[8]
• On October 27, 2017, Casio Computer Co., LTD, and Hamura R&D Center created the largest human image of a watch with 266 people.^[9]
• On February 13, 2022, Team Hantare Nacs received the Guinnes World Record for setting up 266 dominoes and knocking them down in one minute by a team of 8.^[10]
• On October 17, 2013, 266 people in Quitman, Georgia were tossing skillets simultaneously.^[11]

• The calendar years 266 AD and 266 BC.
• In the French Republican calendar, The year 266 would be a year 2 cycle and be in 2058.^[12]
• 266 is the number for several highways across the countries of Canada, Japan, and the United States.
• 266 Aline is an asteroid in the asteroid belt. It was discovered by Johann Palisa in Vienna. He named it after fellow astronomer Edmund Weiss' daughter.^[13]
• Jorge Mario Bergoglio was elected the 266th pope on March 13, 2013 as Pope Francis.^[14]