80,000

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

80,001 to 80,999

• 80,286 – model number of the Intel 80286 chip
• 80,386 – model number of the Intel 80386 chip
• 80,486 – model number of the Intel 80486 chip
• 80,782 – Pell number P₁₄

  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.
• 82,656 – Kaprekar number: 82656² = 6832014336; 68320 + 14336 = 82656
• 82,944 - 3-smooth number: 2¹⁰ × 3⁴

  83,000 to 83,999

• 83,160 – highly composite number
• 83,521 – 17⁴

  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

• 86,400 – seconds in a day: 24 × 60 × 60 and common DNS default time to live

  87,000 to 87,999

• 87,360 – unitary perfect number

  88,000 to 88,999

• 88,888 – repdigit

  89,000 to 89,999