243 (number)

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← 242 243 244 →
Cardinal two hundred forty-three
Ordinal 243rd
(two hundred 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[edit]

243 is:

In other fields[edit]

243 is:

References[edit]

  1. ^ "Sloane's A082897 : Perfect totient numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.