71 (number)

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← 70 71 72 →
Cardinal seventy-one
Ordinal 71st
(seventy-first)
Factorization prime
Prime 20th
Divisors 1, 71
Roman numeral LXXI
Binary 10001112
Ternary 21223
Quaternary 10134
Quinary 2415
Senary 1556
Octal 1078
Duodecimal 5B12
Hexadecimal 4716
Vigesimal 3B20
Base 36 1Z36

71 (seventy-one) is the natural number following 70 and preceding 72.

In mathematics[edit]

71 is:

If we add up the primes less than 71 (2 through 67), we get 568, which is divisible by 71, 8 times.

In science[edit]

In astronomy[edit]

In other fields[edit]

Seventy-one is also:

References[edit]

  1. ^ "Sloane's A069099 : Centered heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29. 
  2. ^ "Sloane's A063980 : Pillai primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29. 
  3. ^ "Sloane's A002267 : The 15 supersingular primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29. 
  4. ^ "Sloane's A000945 : Euclid-Mullin sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.