# 70,000

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 ← 69999 70000 70001 →
Cardinal seventy thousand
Ordinal 70000th
(seventy thousandth)
Factorization 24× 54× 7
Roman numeral LXX
Binary 100010001011100002
Ternary 101200001213
Quaternary 1010113004
Quinary 42200005
Senary 13000246
Octal 2105608
Duodecimal 3461412
Vigesimal 8F0020
Base 36 1I0G36

70,000 (seventy thousand) is the natural number that comes after 69,999 and before 70,001.

## Selected numbers in the range 70000–79999

• 70000 – round number
• 71656 – pentagonal pyramidal number
• 73440 – 15 × 16 × 17 × 18
• 73712 – number of n-Queens Problem solutions for n = 13
• 73728 – 3-smooth number
• 74088 – 423
• 74205 – registry number of the USS Defiant on Star Trek: Deep Space Nine
• 74656 – registry number of the USS Voyager on Star Trek: Voyager
• 75025 – Fibonacci number,[1] Markov number[2]
• 75361 – Carmichael number[3]
• 76084 – amicable number with 63020
• 76176 – sum of the cubes of the first 23 positive integers
• 76424 – tetranacci number[4]
• 77778 – Kaprekar number[5]
• 78125 – 57
• 78557 – conjectured to be the smallest Sierpiński number
• 78732 – 3-smooth number
• 79507 – 433

## References

1. ^ "Sloane's A000045 : Fibonacci numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
2. ^ "Sloane's A002559 : Markoff (or Markov) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
3. ^ "Sloane's A002997 : Carmichael numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
4. ^ "Sloane's A000078 : Tetranacci numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
5. ^ "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.