80,000

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← 79999 80000 80001 →
Cardinaleighty thousand
Ordinal80000th
(eighty thousandth)
Factorization27 × 54
Greek numeral
Roman numeralLXXX
Binary100111000100000002
Ternary110012012223
Senary14142126
Octal2342008
Duodecimal3A36812
Hexadecimal1388016

80,000 (eighty thousand) is the natural number that comes after 79,999 and before 80,001. It is a round number, the approximate number of hours in one's career, and the name of career advisory service 80,000 Hours.

Selected numbers in the range 80,000–89,999

80,001 to 80,999

81,000 to 81,999

82,000 to 82,999

  • 82,000 – the only currently known number greater than 1 that can be written in bases from 2 through 5 using only 0s and 1s.[2][3]
  • 82,656Kaprekar number: 826562 = 6832014336; 68320 + 14336 = 82656[4]
  • 82,944 - 3-smooth number: 210 × 34

83,000 to 83,999

84,000 to 84,999

85,000 to 85,999

  • 85,085 - product of five consecutive primes: 5 × 7 × 11 × 13 × 17
  • 85,184 – 443

86,000 to 86,999

87,000 to 87,999

88,000 to 88,999

89,000 to 89,999

References

  1. ^ Sloane, N. J. A. (ed.). "Sequence A000129 (Pell numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  2. ^ Sequence A146025 in The On-Line Encyclopedia of Integer Sequences
  3. ^ Sequence A258107 in The On-Line Encyclopedia of Integer Sequences
  4. ^ Sloane, N. J. A. (ed.). "Sequence A006886 (Kaprekar numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  5. ^ Sloane, N. J. A. (ed.). "Sequence A002182 (Highly composite numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
  6. ^ Sloane, N. J. A. (ed.). "Sequence A002827 (Unitary perfect numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.