From Wikipedia, the free encyclopedia
Natural number
8000 (eight thousand ) is the
natural number following
7999 and preceding
8001 .
8000 is the
cube of
20 , as well as the sum of four consecutive integers cubed, 113 + 123 + 133 + 143 .
The fourteen tallest mountains on Earth, which exceed 8000 meters in height, are sometimes referred to as
eight-thousanders .
[1]
Selected numbers in the range 8001–8999
8001 to 8099
8100 to 8199
8200 to 8299
8300 to 8399
8400 to 8499
8500 to 8599
8600 to 8699
8625 – nonagonal number
8646 – triangular number
8649 = 932 , centered octagonal number
8658 - sum of the first four
perfect numbers (
6 ,
28 ,
496 ,
8128 ) and the product of the culturally significant
666 and
13
8663 – Sophie Germain prime
8693 – Sophie Germain prime
8695 – decagonal number
8699 – safe prime
8700 to 8799
8712 – smallest number that is divisible by its reverse: 8712 = 4 × 2178 (excluding palindromes and numbers with trailing zeros)
8713 – balanced prime
8719 –
super-prime
8741 – Sophie Germain prime
8747 – safe prime, balanced prime,
super-prime
8748 –
3-smooth number (22 ×37 )
8751 –
perfect totient number
[13]
8760 - the number of hours in a non-leap year; 365 × 24
8761 – super-prime
8778 – triangular number
8783 – safe prime
8784 - the number of hours in a leap year; 366 × 24
8800 to 8899
8801 –
magic constant of n × n normal
magic square and
n -Queens Problem for n = 26.
8807 –
super-prime , sum of eleven consecutive primes (761 + 769 + 773 + 787 + 797 + 809 + 811 + 821 + 823 + 827 + 829)
8819 – safe prime
8833 = 882 + 332
8836 = 942
8839 – sum of twenty-three consecutive primes (313 + 317 + 331 + 337 + 347 + 349 + 353 + 359 + 367 + 373 + 379 + 383 + 389 + 397 + 401 + 409 + 419 + 421 + 431 + 433 + 439 + 443 + 449)
8849 –
super-prime
8855 – member of a
Ruth-Aaron pair (first definition) with 8856
8856 – member of a Ruth-Aaron pair (first definition) with 8855
8888 -
repdigit
8900 to 8999
Prime numbers
There are 110
prime numbers between 8000 and 9000:
[15]
[16]
8009, 8011, 8017, 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111, 8117, 8123, 8147, 8161, 8167, 8171, 8179, 8191, 8209, 8219, 8221, 8231, 8233, 8237, 8243, 8263, 8269, 8273, 8287, 8291, 8293, 8297, 8311, 8317, 8329, 8353, 8363, 8369, 8377, 8387, 8389, 8419, 8423, 8429, 8431, 8443, 8447, 8461, 8467, 8501, 8513, 8521, 8527, 8537, 8539, 8543, 8563, 8573, 8581, 8597, 8599, 8609, 8623, 8627, 8629, 8641, 8647, 8663, 8669, 8677, 8681, 8689, 8693, 8699, 8707, 8713, 8719, 8731, 8737, 8741, 8747, 8753, 8761, 8779, 8783, 8803, 8807, 8819, 8821, 8831, 8837, 8839, 8849, 8861, 8863, 8867, 8887, 8893, 8923, 8929, 8933, 8941, 8951, 8963, 8969, 8971, 8999
References
^ Voiland, Adam (16 December 2013).
"The Eight-Thousanders" . The Earth Observatory . NASA. Retrieved 12 September 2016 .
^
"Sloane's A005900 : Octahedral numbers" . The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-06-14 .
^
"Sloane's A002411 : Pentagonal pyramidal numbers" . The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-06-14 .
^
Sloane, N. J. A. (ed.).
"Sequence A005188 (Armstrong (or Plus Perfect, or narcissistic) numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A002407 (Cuban primes)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A050217 (Super-Poulet numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A001107 (10-gonal (or decagonal) numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A049363 (a(1) = 1; for n > 1, smallest digitally balanced number in base n)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A076980 (Leyland numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A006879 (Number of primes with n digits.)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A000292 (Tetrahedral numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A000330 (Square pyramidal numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A082897 (Perfect totient numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A002997 (Carmichael numbers)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Sloane, N. J. A. (ed.).
"Sequence A038823 (Number of primes between n*1000 and (n+1)*1000)" . The
On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
^
Stein, William A. (10 February 2017).
"The Riemann Hypothesis and The Birch and Swinnerton-Dyer Conjecture" . wstein.org . Retrieved 6 February 2021 .
100,000
1,000,000
10,000,000
100,000,000
1,000,000,000