80,000 Explained

Number:

80000

80,000 (eighty thousand) is the natural number after 79,999 and before 80,001.

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

80,782 = Pell number P₁₄^[1]
81,081 = smallest abundant number ending in 1, 3, 7, or 9
81,181 = number of reduced trees with 25 nodes
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]
82,025 = number of primes

\leq2²⁰

.^[4]

82,467 = number of square (0,1)-matrices without zero rows and with exactly 6 entries equal to 1
82,656 = Kaprekar number: 82656² = 6832014336; 68320 + 14336 = 82656^[5]
82,944 = 3-smooth number: 2¹⁰ × 3⁴
83,097 = Riordan number
83,160 = the 29th highly composite number^[6]
83,357 = Friedman prime
83,521 = 17⁴
84,187 – number of parallelogram polyominoes with 15 cells.
84,375 = 3³×5⁵
84,672 = number of primitive polynomials of degree 21 over GF(2)
85,085 = product of five consecutive primes: 5 × 7 × 11 × 13 × 17
85,184 = 44³
86,400 = seconds in a day: 24 × 60 × 60 and common DNS default time to live
87,360 = unitary perfect number^[7]
88,789 = the start of a prime 9-tuple, along with 88793, 88799, 88801, 88807, 88811, 88813, 88817, and 88819.
88,888 = repdigit
89,134 = number of partitions of 45

There are 876 prime numbers between 80000 and 90000.