The Number 1791: Properties and MeaningsPrime Factors of 1791=3x3x199.
1791 largest natural number that cannot be expressed as a sum of at most four hexagonal numbers.
The Year 1791 ADIn the year 1791 AD John Barber invented the gas turbine.
In the year 1791 AD early bicycles were invented in Scotland.
In the year 1791 AD Etteilla died.(Esoteric History)
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