247 (number)

This article is about the number 247. It is not to be confused with 24/7.
246 247 248
Cardinal two hundred forty-seven
Ordinal 247th
(two hundred and forty-seventh)
Factorization 13 × 19
Roman numeral CCXLVII
Binary 111101112
Ternary 1000113
Quaternary 33134
Quinary 14425
Senary 10516
Octal 3678
Duodecimal 18712
Hexadecimal F716
Vigesimal C720
Base 36 6V36

247 (two hundred [and] forty-seven) is the natural number following 246 and preceding 248.

In mathematics

247 is:

The mathematician and philosopher Alex Bellos suggested in 2014 that a candidate for the lowest uninteresting number would be 247 because it was, at the time, "the lowest number not to have its own page on English Wikipedia".[4]

In other fields

References

  1. "Sloane's A078972 : Brilliant numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. "Sloane's A000326 : Pentagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  3. Friedman, Erich. "What's Special About This Number?". stetson.edu. Retrieved 15 April 2016.
  4. Bellos, Alex (June 2014). The Grapes of Math: How Life Reflects Numbers and Numbers Reflect Life. illus. The Surreal McCoy (1st Simon & Schuster hardcover ed.). N.Y.: Simon & Schuster. pp. 238 & 319 (quoting p. 319). ISBN 978-1-4516-4009-0.
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