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243 (number)

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243 (number)

242 243 244
Cardinal two hundred forty-three
Ordinal 243rd
(two hundred and forty-third)
Factorization 35
Roman numeral CCXLIII
Binary 111100112
Ternary 1000003
Quaternary 33034
Quinary 14335
Senary 10436
Octal 3638
Duodecimal 18312
Hexadecimal F316
Vigesimal C320
Base 36 6R36

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

In mathematics

243 is:

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

In other fields

243 is:


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