To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

From Wikipedia, the free encyclopedia

← 246  247  248 →
Cardinal two hundred forty-seven
Ordinal 247th
(two hundred forty-seventh)
Factorization 13 × 19
Greek numeral ΣΜΖ´
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.

YouTube Encyclopedic

  • 1/2
    Views:
    355
    8 491
  • Next Set #1 | Number and Letter series | Alphabet and Number remembering trick | Reasoning trick
  • Celestial Number 7 and Pac's Life

Transcription

In mathematics

247 is:

  • a semiprime.
  • a brilliant number (the product of two primes with the same number of digits).[1]
  • a pentagonal number.[2]
  • palindromic in bases 18 (DD18) and 246 (11246).
  • a Harshad number in bases 10, 14, 19, 20, 27, 39, 40, 58, 77, 79, 115, 118, 229 and 235.
  • the smallest number which can be expressed as the difference between two integers that contain together all digits 0-9. i.e. 247 = 50123 - 49876.[3]

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

  • Sometimes (e.g. when it is used in a URL), 247 is used as an alternative to 24/7, an abbreviation which means "24 hours a day, 7 days a week".
  • Approximate number of acres in a square kilometer (1 km2 ≈ 247.10538 acres).

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. 
This page was last edited on 4 September 2018, at 03:30
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.