On 71

2011 marked the 40th years for my high school graduating class. To my fellow classmates at my school and elsewhere in the class of ’71, here is a bunch of stuff you may not have known about seventy-one (71). Besides, I better post this before 2011 ends.

In Mathematics

  • Only divisible by 2 numbers, 1 and 71
  • The 20th prime number
  • Add all the prime numbers less than 71, the sum is divisible by 71
  • The algebraic degree of Conway’s and a centered heptagonal number
  • Also written as LXXI, setenta y un, sedmdesát jedna, settanta uno, einundsiebzig

In Science

  • The atomic number of lutetium, whose neutral atom has 71 protons and 71 electrons
  • 71 degrees F = degrees 21.6 C, but 71 degrees C = 159.8 degrees F

In Geography

  • The percentage of Earth’s surface covered by water
  • Interstate 71 runs 345.57 miles from Cleveland, OH to Louisville, KY.
  • US Route 71 runs 1532 miles from International Falls, MN to the intersection with US 190 in southern Louisiana

In Entertainment

  • Shakespeare in Love won Best Picture at the 71st Academy Awards
  • FCC removed channel 71 from TV use in 1983, thus causing 12 stations to change their channel
  • In the Jason Bourne novels by Robert Ludlum, Treadstone Seventy-One is the CIA department that made Bourne and the other super agents
  • 71 Fragments of a Chronology of Chance, a film by Michael Haneke
  • 71: Into the Fire South Korean film about the Korean War
  • SR-71 is an American Alternative Rock band
  • Hip hop artist named Mark Seventy One

In Sports

  • Toronto Argonauts won the 71st Grey Cup (Canadian Football) in 1983
  • The NFL has yet to announce the date and location of Super Bowl LXXI, but the odds are good that the Bengals won’t be in it
  • Walter Jones (Seattle Seahawks) has the only retired 71 in the 4 major pro sports
  • Car 71 has raced in 786 NASCAR races, most by Dave Marcis who won 5 times

In Business

In Military

  • The registry of the U.S. Navy’s nuclear aircraft carrier USS Theodore Roosevelt (CVN-71), named after U.S. President Theodore Roosevelt.
  • Lockheed SR-71 Blackbird long-range, Mach 3 strategic reconnaissance aircraft
  • 71st Pennsylvania Infantry fought for the Union Army during the American Civil War
  • British army’s 71st Regiment of Foot formed in 1881 and participated in the Seven Years War shortly thereafter.

In 71 AD

  • Started on a Tuesday
  • Thai solar calendar year 614, Buddhist calendar year 615, Korean calendar year 2404
  • Use of locks and keys of clever designs starts in Rome

In 71 BC

  • Burmese calendar year -708, Berber calendar year 880, and Byzantine calendar year 5438-5439
  • Spartacus killed
  • Third Servile War ends


  • The Seventy-first United States Congress met from March 4, 1929 to March 4, 1931, during the first two years of Herbert Hoover’s presidency.
  • The Great Sanhedrin, the supreme court of ancient Israel, had 71 judges
  • The form number for the United States Office of Personnel Management for requesting a leave of absence
  • The number of different characters one can use with a standard English Keyboard, excluding uppercase letters
  • This survey says 71% of employers value emotional intelligence
  • They got their wish! This September 2011 poll says 71% of Republicans don’t want Sarah Palin to run