71

This number is a prime.

Just showing those entries submitted by 'Beedassy': (Click here to show all)

Jeffery Marshall © 2002
+ The smallest prime p such that p4 = q3 + r2 is soluble in positive integers : 714 = 1363 + 47852. [Beedassy]

+ Having varied widely over the decades and constantly being narrowed, the Hubble's constant H0 (a measure of the Universe's observed expansion rate) current best estimates revolve around 71 km/s/Mpc (kilometers per second for each megaparsec or about 3.3 million light years away from the Earth). [Beedassy]

+ The smallest emirp whose binary reversal (11100012) corresponds to another emirp (113). [Beedassy]

+ The smallest emirp p which taken together with the pth prime is also an emirp (71353). [Beedassy]

+ The first occurrence of three successive emirps in the sequence of primes: 71, 73, 79. [Beedassy]

(There are 2 curios for this number that have not yet been approved by an editor.)

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