7000 (number)

7000 (seven thousand) is a natural number. It is between 6999 and 7001.

6999 7000 7001
Cardinalseven thousand
Ordinal7000th
(seven thousandth)
Factorization23· 53· 7
Roman numeralVMM, or VII
Unicode symbol(s)VMM, vmm, VII, vii
Binary11011010110002
Ternary1001210213
Quaternary12311204
Quinary2110005
Senary522246
Octal155308
Duodecimal407412
Hexadecimal1B5816
VigesimalHA020
Base 365EG36
ArmenianՒ

Important numbers 7001–7999

7001 to 7099

7100 to 7199

7200 to 7299

7300 to 7399

  • 7316 – the number of 18-bead binary necklaces with beads of 2 colors where colors can be swapped, but turning over is not allowed[12]
  • 7338 – Fine number[13]
  • 7349 – Sophie Germain prime
  • 7351super-prime, cuban prime of the form x = y + 1[1]
  • 7381 – triangular number
  • 7385Keith number[14]
  • 7396 = 862

7400 to 7499

7500 to 7599

7600 to 7699

  • 7607 – safe prime, super-prime
  • 7612 – decagonal number[10]
  • 7614 – nonagonal number
  • 7626 – triangular number
  • 7643 – Sophie Germain prime, safe prime
  • 7647 – Keith number[14]
  • 7649 – Sophie Germain prime, super-prime
  • 7691 – Sophie Germain prime
  • 7699super-prime, emirp, the sum of first 60 primes, the first prime above 281 to be the sum of the first k primes for some k

7700 to 7799

  • 7703 – safe prime
  • 7710 = number of primitive polynomials of degree 17 over GF(2)[18]
  • 7714square pyramidal number[19]
  • 7727 – safe prime
  • 7739 – member of the Padovan sequence[20]
  • 7741 = number of trees with 15 unlabeled nodes[21]
  • 7744 = 882, square palindrome not ending in 0
  • 7750 – triangular number
  • 7753super-prime
  • 7770 – tetrahedral number[4]
  • 7776 = 65, number of primitive polynomials of degree 18 over GF(2)[22]
  • 7777 – Kaprekar number,[11] repdigit[23]

7800 to 7899

  • 7810ISO/IEC 7810 is the ISO's standard for physical characteristics of identification cards
  • 7821 – n=6 value of [math]\displaystyle{ \sum_{k=1}^{n}n^{floor(\frac{n}{k})-1} }[/math]
  • 7823 – Sophie Germain prime, safe prime, balanced prime
  • 7825magic constant of n × n normal magic square and n-Queens Problem for n = 25. It is also the first counterexample in the Boolean Pythagorean triples problem.
  • 7841 – Sophie Germain prime, balanced prime, super-prime
  • 7875 – triangular number
  • 7883 – Sophie Germain prime, super-prime
  • 7897 – centered heptagonal number

7900 to 7999

Prime numbers

There are 107 prime numbers between 7000 and 8000:[26][27]

7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103, 7109, 7121, 7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229, 7237, 7243, 7247, 7253, 7283, 7297, 7307, 7309, 7321, 7331, 7333, 7349, 7351, 7369, 7393, 7411, 7417, 7433, 7451, 7457, 7459, 7477, 7481, 7487, 7489, 7499, 7507, 7517, 7523, 7529, 7537, 7541, 7547, 7549, 7559, 7561, 7573, 7577, 7583, 7589, 7591, 7603, 7607, 7621, 7639, 7643, 7649, 7669, 7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723, 7727, 7741, 7753, 7757, 7759, 7789, 7793, 7817, 7823, 7829, 7841, 7853, 7867, 7873, 7877, 7879, 7883, 7901, 7907, 7919, 7927, 7933, 7937, 7949, 7951, 7963, 7993

References

  1. 1.0 1.1 "Sloane's A002407 : Cuban primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  2. "Sloane's A076980 : Leyland numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  3. "Sloane's A005900 : Octahedral numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  4. 4.0 4.1 "Sloane's A000292 : Tetrahedral numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  5. Template:Cite OEIS
  6. 6.0 6.1 "Sloane's A006037 : Weird numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  7. "Sloane's A002411 : Pentagonal pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  8. 8.0 8.1 "Sloane's A016754 : Odd squares: a(n) = (2n+1)^2. Also centered octagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  9. "Sloane's A069099 : Centered heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  10. 10.0 10.1 10.2 "Sloane's A001107 : 10-gonal (or decagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  11. 11.0 11.1 "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  12. Template:Cite OEIS
  13. Template:Cite OEIS
  14. 14.0 14.1 14.2 "Sloane's A007629 : Repfigit (REPetitive FIbonacci-like diGIT) numbers (or Keith numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  15. "Sloane's A005898 : Centered cube numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  16. "Sloane's A002182 : Highly composite numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  17. "Sloane's A002559 : Markoff (or Markov) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  18. Template:Cite OEIS
  19. "Sloane's A000330 : Square pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  20. "Sloane's A000931 : Padovan sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-11.
  21. Template:Cite OEIS
  22. Template:Cite OEIS
  23. Template:Cite oeis
  24. "7919". The Prime Pages. University of Tennessee. Retrieved April 25, 2017.
  25. "Sloane's A050217 : Super-Poulet numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
  26. Template:Cite OEIS
  27. Stein, William A. (10 February 2017). "The Riemann Hypothesis and The Birch and Swinnerton-Dyer Conjecture". wstein.org. Retrieved 6 February 2021.