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30,000

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← 29999 30000 30001 →
Cardinalthirty thousand
Ordinal30000th
(thirty thousandth)
Factorization24 × 3 × 54
Greek numeral
Roman numeralXXX
Binary1110101001100002
Ternary11120110103
Senary3505206
Octal724608
Duodecimal1544012
Hexadecimal753016

30,000 (thirty thousand) is the natural number that comes after 29,999 and before 30,001.

Selected numbers in the range 30001–39999

30001 to 30999

31000 to 31999

32000 to 32999

33000 to 33999

  • 33333 = repdigit
  • 33461 = Pell number,[10] Markov number[11]
  • 33511 = square pyramidal number
  • 33781 = octahedral number[4]

34000 to 34999

35000 to 35999

36000 to 36999

  • 36100 = sum of the cubes of the first 19 positive integers
  • 36463 – number of parallelogram polyominoes with 14 cells[17]
  • 36594 = octahedral number[4]

37000 to 37999

38000 to 38999

  • 38024 = square pyramidal number
  • 38209 = n such that n | (3n + 5)[19]
  • 38416 = 144
  • 38807 = number of non-equivalent ways of expressing 10,000,000 as the sum of two prime numbers[20]
  • 38962 = Kaprekar number[21]

39000 to 39999

  • 39304 = 343
  • 39559 = octahedral number[4]
  • 39648 = tetranacci number[22]

Primes

There are 958 prime numbers between 30000 and 40000.

References

  1. ^ "Sloane's A002110 : Primorial numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  2. ^ a b "Sloane's A001599 : Harmonic or Ore numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  3. ^ a b c "Sloane's A002411 : Pentagonal pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  4. ^ a b c d "Sloane's A005900 : Octahedral numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  5. ^ Weisstein, Eric W. "Prime Gaps". MathWorld.
  6. ^ a b Sloane, N. J. A. (ed.). "Sequence A007530". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  7. ^ "Sloane's A051015 : Zeisel numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  8. ^ Sloane, N. J. A. (ed.). "Sequence A088959". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  9. ^ "Sloane's A076980 : Leyland numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  10. ^ "Sloane's A000129 : Pell numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  11. ^ a b "Sloane's A002559 : Markoff (or Markov) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  12. ^ "Sloane's A000178 : Superfactorials". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  13. ^ "Why was 34,969 Count von Count's magic number?". BBC News. 2012-08-30. Retrieved 2012-08-31.
  14. ^ "Sloane's A000073 : Tribonacci numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  15. ^ "Sloane's A005165 : Alternating factorials". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  16. ^ "Sloane's A195163 : 1000-gonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  17. ^ Sloane, N. J. A. (ed.). "Sequence A006958 (Number of parallelogram polyominoes with n cells (also called staircase polyominoes, although that term is overused))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  18. ^ "Sloane's A000682 : Semimeanders". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  19. ^ Sloane, N. J. A. (ed.). "Sequence A277288 (Positive integers n such that n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  20. ^ Sloane, N. J. A. (ed.). "Sequence A065577 (Number of Goldbach partitions of 10^n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2023-08-31.
  21. ^ "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.
  22. ^ "Sloane's A000078 : Tetranacci numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-15.