243 (number)

This article needs additional citations for verification. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources:  –  ·  ·  · scholar · JSTOR (May 2016) (Learn how and when to remove this template message)

243 (two hundred [and] forty-three) is the natural number following 242 and preceding 244.

In mathematics[]

243 is:

• the only 3-digit number that is a fifth power (3⁵).
• a perfect totient number.^[1]
• the sum of five consecutive prime numbers (41 + 43 + 47 + 53 + 59).
• an 82-gonal number.
• a Harshad number.

In other fields[]

243 is:

• the Calling code for the Democratic Republic of the Congo, the country once known as Zaire.
• the year 243 AD or 243 BC.
• an Aircraft emergency frequency (243.0 MHz) for military aircraft.
• Aloha Airlines Flight 243 which suffered an explosive decompression near Maui, HI on April 28, 1988
• .243 Winchester and .243 WSSM, rifle rounds
• The number of Earth Days for the planet Venus to complete one Venusian day, one revolution

References[]

This article about a number is a stub. You can help Wikipedia by .

• v
• t