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286 (number)

From Wikipedia, the free encyclopedia
← 285 286 287 →
Cardinaltwo hundred eighty-six
Ordinal286th
(two hundred eighty-sixth)
Factorization2 × 11 × 13
Divisors1, 2, 11, 13, 22, 26, 143, 286
Greek numeralΣΠϚ´
Roman numeralCCLXXXVI
Binary1000111102
Ternary1011213
Senary11546
Octal4368
Duodecimal1BA12
Hexadecimal11E16

286 is the natural number following 285 and preceding 287.

In mathematics

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World Records

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  • On November 7, 2013, Alastair Galpin received the Guinness World Record for the fastest time to slice 10 matches in half. He completed it in 2.86 seconds.[6]
  • On April 27, 2013, the largest tiramisu-making lesson ensued in Japan with 286 participants.[7]
  • On September 21, 2007, the largest steel drum ensemble was achieved in Poznan, Poland. There were 286 members.[8]
  • On November 12, 2017, Toyota achieved the Guinness World Record for the greatest number of toy cars launched simultaneously. There were 286 toy cars.[9]

Other fields

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References

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  1. ^ "Composite numbers". mathworld.wolfram.com.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A039772 (Even numbers k such that phi(k) and k-1 are distinct and have a common factor > 1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ "Tetrahedral numbers". mathworld.wolfram.com.
  4. ^ "Sphenic numbers". mathworld.wolfram.com.
  5. ^ Sloane, N. J. A. (ed.). "Sequence A130433 (Even pseudoprimes to base 3)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  6. ^ "2.86 seconds to halve 10 matches". www.guinnessworldrecords.com.
  7. ^ "286 people at a tiramisu-making lesson". www.guinnessworldrecords.com.
  8. ^ "286 people in a steel drum ensemble". www.guinnessworldrecords.com.
  9. ^ "286 toy cars released at the same time". www.guinnessworldrecords.com.
  10. ^ "286 Iclea". in-the-sky.org.