86 (number)

Last updated
85 86 87
Cardinal eighty-six
Ordinal 86th
(eighty-sixth)
Factorization 2 × 43
Divisors 1, 2, 43, 86
Greek numeral ΠϚ´
Roman numeral LXXXVI
Binary 10101102
Ternary 100123
Senary 2226
Octal 1268
Duodecimal 7212
Hexadecimal 5616

86 (eighty-six) is the natural number following 85 and preceding 87.

Contents

In mathematics

86 is:

It appears in the Padovan sequence, preceded by the terms 37, 49, 65 (it is the sum of the first two of these). [7]

It is conjectured that 86 is the largest n for which the decimal expansion of 2n contains no 0. [8]

86 = (8 × 6 = 48) + (4 × 8 = 32) + (3 × 2 = 6). That is, 86 is equal to the sum of the numbers formed in calculating its multiplicative persistence.

In science

In other fields

See also

Notes

  1. Sloane, N. J. A. (ed.). "SequenceA005277(Nontotients)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-29.
  2. Sloane, N. J. A. (ed.). "SequenceA005278(Noncototients)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-29.
  3. Sloane, N. J. A. (ed.). "SequenceA056809". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  4. Sloane, N. J. A. (ed.). "SequenceA059756(Erdős-Woods numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-29.
  5. Sloane, N. J. A. (ed.). "SequenceA007770(Happy numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-29.
  6. Sloane, N. J. A. (ed.). "SequenceA003052(Self numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-29.
  7. Sloane, N. J. A. (ed.). "SequenceA000931(Padovan sequence)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-29.
  8. Zumkeller, Reinhard (2013-04-30). "Sequence A007377". Online Encyclopædia of Integer Sequences. Retrieved 2014-10-16.
  9. "Where Did the Term 86 Come From?". www.mentalfloss.com. 2013-08-13. Retrieved 2021-10-30.

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