41 Fun Facts About the Number 41

In honor of my 41st birthday, here are 41 fun facts about the number 41:

  1. 41 is the natural number following 40 and preceding 42.
  2. 41 is an odd number.
  3. 41 is a prime number.
  4. 41 is a twin prime with the number 43.
  5. 41 is the sum of the first six prime numbers (2 + 3 + 5 + 7 + 11 + 13).
  6. 41 is a supersingular prime.
  7. 41 is a Sophie Germain prime.
  8. 41 is a Newman-Shanks-Williams prime.
  9. 41 is an Eisenstein prime.
  10. 41 is a Proth prime.
  11. 41 is the largest of Euler’s lucky numbers.
  12. 41 is the sum of two squares (16 + 25).
  13. 41 is a centered square number.
  14. 41 is the first number in a Cunningham chain consisting of 41, 83, and 167.
  15. Adding up the sums for the divisors of the numbers 1 through 7 yields 41.
  16. Symphony No. 41 is the last symphony of Wolfgang Amadeus Mozart.
  17. “#41” is a song by the Dave Matthews Band.
  18. Roman emperor Caligula was assassinated in the year 41.
  19. 41 was Charlton Heston’s designation as a warship slave in the film Ben-Hur.
  20. 41 is the code number given to Tetsuo Shima in the film Akira.
  21. 41 is Billy Cole’s jersey number in the film The Last Boy Scout.
  22. Cary Grant is attacked by a crop duster on Highway 41 in the film North by Northwest.
  23. 41 is the atomic number for niobium.
  24. The Messier object M41 is magnitude 5.0 open cluster in the constellation Canis Major.
  25. The New General Catalogue object NGC 41 is a spiral galaxy in the constellation Pegasus.
  26. A 41-gun salute is used on special occasions in the United Kingdom.
  27. One molecule of Penicillin G had 41 atoms.
  28. The Roman numeral for 41 is XLI.
  29. George H. W. Bush was the 41st president.
  30. “The 41 for Freedom” was the nickname of the United States ballistic missile submarine fleet.
  31. Some 10mm caliber firearm cartridges are referred to as “.41.”
  32. C-41 process is the film developing process for 35mm color negative film.
  33. 41 is the number of the French department Loire-et-Cher.
  34. 41 is the number of members in the U.S. Senate needed to defeat a cloture vote and sustain a filibuster indefinitely.
  35. Pope Zosimus was the 41st pope.
  36. Montana was the 41st state to be admitted to the Union.
  37. 41 is the calling code assigned to Switzerland.
  38. 41 is the retired jersey number of Chicago Bears running back Brian Piccolo.
  39. 41 was the race number worn by Sir Roger Bannister when he broke the 4-minute mile barrier.
  40. 41 is the car number currently driven by NASCAR driver Kurt Busch.
  41. 41 in binary is 101001.

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