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71 is the natural number following 70 and preceding 72.
In mathematicsIt is the 20th prime number. The next is seventy-three, with which it comprises a twin prime. It is also a permutable prime with seventeen. If we add up the primes less than 71 (2 through 67), we get 568, which is divisible by 71, 8 times. 71 is a centered heptagonal number. In science
In astronomy,
In other fieldsSeventy-one is also:
es:Setenta y uno ia:71 it:Settantuno ja:71 sl:71 (število) sv:71 (tal) zh:71 |
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