7000 (number)

← 6999 7000 7001 →
List of numbers — Integers ← 0 1k 2k 3k 4k 5k 6k 7k 8k 9k →
Cardinal	seven thousand
Ordinal	7000th (seven thousandth)
Factorization	2^3× 5^3× 7
Roman numeral	VMM
Unicode symbol(s)	VMM, vmm
Binary	11011010110002
Ternary	1001210213
Quaternary	12311204
Quinary	2110005
Senary	522246
Octal	155308
Duodecimal	407412
Hexadecimal	1B5816
Vigesimal	HA020
Base 36	5EG36

7000 (seven thousand) is the natural number following 6999 and preceding 7001.

Selected numbers in the range 7001–7999

• 7021 – triangular number
• 7043 – Sophie Germain prime
• 7056 – 84²
• 7057 – cuban prime of the form x = y + 1^[1]
• 7073 – Leyland number^[2]
• 7079 – Sophie Germain prime, safe prime
• 7103 – Sophie Germain prime
• 7106 – octahedral number^[3]
• 7121 – Sophie Germain prime
• 7140 – triangular number, also a pronic number and hence 7140/2 = 3570 is also a triangular number, tetrahedral number^[4]
• 7151 – Sophie Germain prime
• 7187 – safe prime
• 7192 – weird number^[5]
• 7193 – Sophie Germain prime
• 7200 – pentagonal pyramidal number^[6]
• 7211 – Sophie Germain prime
• 7225 – 85², centered octagonal number^[7]
• 7230 – 36² + 37² + 38² + 39² + 40² = 41² + 42² + 43² + 44²
• 7246 – centered heptagonal number^[8]
• 7247 – safe prime
• 7260 – triangular number
• 7267 – decagonal number^[9]
• 7272 – Kaprekar number^[10]
• 7291 – nonagonal number
• 7349 – Sophie Germain prime
• 7351 – cuban prime of the form x = y + 1^[1]
• 7381 – triangular number
• 7385 – Keith number^[11]
• 7396 – 86²
• 7433 – Sophie Germain prime
• 7471 – centered cube number^[12]
• 7503 – triangular number
• 7523 – balanced prime, safe prime
• 7541 – Sophie Germain prime
• 7559 – safe prime
• 7560 – highly composite number^[13]
• 7561 – Markov number^[14]
• 7568 – centered heptagonal number
• 7569 – 87², centered octagonal number^[7]
• 7583 – balanced prime
• 7607 – safe prime
• 7612 – decagonal number^[9]
• 7614 – nonagonal number
• 7626 – triangular number
• 7643 – Sophie Germain prime, safe prime
• 7647 – Keith number^[11]
• 7649 – Sophie Germain prime
• 7691 – Sophie Germain prime
• 7699 – emirp, sum of first 60 primes
• 7703 – safe prime
• 7714 – square pyramidal number^[15]
• 7727 – safe prime
• 7739 – member of the Padovan sequence^[16]
• 7744 – 88², square nialpdrome not ending in 0
• 7750 – triangular number
• 7770 – tetrahedral number^[4]
• 7776 – 6⁵
• 7777 – Kaprekar number^[10]
• 7810 – ISO/IEC 7810 is the ISO's standard for physical characteristics of identification cards
• 7823 – Sophie Germain prime, safe prime, balanced prime
• 7825 – magic constant of n × n normal magic square and n-Queens Problem for n = 25. Also the first counterexample in the Boolean Pythagorean triples problem.
• 7841 – Sophie Germain prime, balanced prime
• 7875 – triangular number
• 7883 – Sophie Germain prime
• 7897 – centered heptagonal number
• 7901 – Sophie Germain prime
• 7909 – Keith number^[11]
• 7912 – weird number^[5]
• 7919 – thousandth prime
• 7920 – the order of the Mathieu group M₁₁, the smallest sporadic simple group
• 7921 – 89², centered octagonal number
• 7944 – nonagonal number
• 7957 – super-Poulet number^[17]
• 7965 – decagonal number^[9]
• 7979 – highly cototient number

References

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. "Sloane's A000292 : Tetrahedral numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
5. "Sloane's A006037 : Weird numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
6. "Sloane's A002411 : Pentagonal pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
7. "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.
8. "Sloane's A069099 : Centered heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
9. "Sloane's A001107 : 10-gonal (or decagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
10. "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
11. "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.
12. "Sloane's A005898 : Centered cube numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
13. "Sloane's A002182 : Highly composite numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
14. "Sloane's A002559 : Markoff (or Markov) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
15. "Sloane's A000330 : Square pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.
16. "Sloane's A000931 : Padovan sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-11.
17. "Sloane's A050217 : Super-Poulet numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-14.