In honor of my 43rd birthday, here are 43 fun facts about the number 43:

- 43 is the natural number following 42 and preceding 44.
- 43 is an odd number.
- 43 is a prime number.
- 43 is a twin prime with the number 41.
- 43 is the smallest prime number expressible as the sum of 2, 3, 4, or 5 different primes.
- 43 is the smallest prime number that is not a Chen prime.
- 43 is the third Wagstaff prime.
- 43 is a centered heptagonal number.
- 43 is a Heegner number.
- 43 is the largest number than is not a McNugget number.
- 43 is a repdigit in base 6 (111).
- 43 is the fourth term of Sylvester’s sequence.
- 43 is a deficient number.
- 43 is an evil number.
- 43 is the smallest non-palindromic prime which on subtracting its reverse gives a perfect square: 43 – 34 = 3
^{2} - 43 is the number of notes in Harry Partch’s 43-tone scale.
*Movie 43*is a 2013 comedy film.- “The 43 Peculiarity” is an episode of the television show
*The Big Bang Theory*. - Agent 43 is one of the main villains on the television show
*The Odd Squad*. - Number 43, in
*Sonnets from the Portuguese*, is one of Elizabeth Barrett Browning’s most famous poems. - Interstate 43 is a freeway in Wisconsin.
- “43” is a song by the jazz-funk band Level 42.
- “43” is also a song by the metal band Mushroomhead.
- 43 is the name of a popular Spanish liqueur.
- Roman politician and author Cicero was murdered in the year 43 BC
- The Roman conquest of Britain began in the year AD 43.
- 43 is the atomic number for technetium.
- The Messier object M43 is magnitude 7.0 region in the constellation Orion, also known as de Marian’s Nebula.
- The New General Catalogue object NGC 43 is a barreled spiral galaxy in the constellation Andromeda.
- The Church of England has 43 cathedrals.
- 43 muscles are needed to frown.
- The Roman numeral for 43 is XLIII.
- George W. Bush was the 43rd president.
- There are 43 verses in the Old English epic poem
*Beowulf*. - Londinium (now London) was founded by the Romans in AD 43.
- NASCAR races begin with 43 cars and drivers.
- Pope Celestine I was the 43rd pope.
- Idaho was the 43rd state to be admitted to the Union.
- 43 is the calling code assigned to Austria.
- 43 is the jersey number of baseball player Dennis Eckersley.
- In Chinese folklore 43 symbolically represents the principle of deliverance or change.
- 43 is the car number currently driven by NASCAR driver Richard Petty.
- 43 in binary is 101011
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