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83 (number)

Number

Number

FieldValue
number83
factorizationprime
prime23rd
divisor1, 83

83 (eighty-three) is the natural number following 82 and preceding 84.

In mathematics

83 is:

  • the sum of three consecutive primes (23 + 29 + 31).
  • the sum of five consecutive primes (11 + 13 + 17 + 19 + 23).
  • the 23rd prime number, following 79 (of which it is also a cousin prime) and preceding 89.
  • a Sophie Germain prime.
  • a safe prime.
  • a Chen prime.
  • an Eisenstein prime with no imaginary part and real part of the form 3n − 1.
  • a highly cototient number.
  • the number of primes that are right-truncatable.
  • a super-prime, because 23 is prime.

In other fields

  • The eighth letter of the alphabet is H and the third letter is C, thus 83 stands for "Heil Christ," a greeting used by organizations that consider themselves to be Christian (While not necessarily a hate symbol, it is often used by hate organizations)
  • An emoticon based on :3 with wide-open eyes.

References

References

  1. "Sloane's A005384 : Sophie Germain primes". OEIS Foundation.
  2. "Sloane's A005385 : Safe primes". OEIS Foundation.
  3. "Sloane's A109611 : Chen primes". OEIS Foundation.
  4. "Sloane's A100827 : Highly cototient numbers". OEIS Foundation.
  5. {{Cite OEIS. A024770. Right-truncatable primes: every prefix is prime
  6. "Hate Number Symbols: 83 - From A Visual Database of Extremist Symbols, Logos and Tattoos".
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