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For other uses, see 243 (disambiguation).
Natural number
243 (two hundred [and] forty-three) is the natural number following 242 and preceding 244.
Additionally, 243 is:
- the only 3-digit number that is a fifth power (35).
- a perfect totient number.[1]
- the sum of five consecutive prime numbers (41 + 43 + 47 + 53 + 59).
- an 82-gonal number.
References
- ^ "Sloane's A082897 : Perfect totient numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
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