Prime Curios!: 70

70
(another Prime Pages' Curiosity)

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The reversal of 2⁷⁰ is prime. [Somer]

The prime formed from the reversal of 2⁷⁰ has a digit sum of 70. [Patterson]

Any composite number n has a witness (i.e., does not pass Miller's test) less than 70(ln n)^2 if the Riemann hypothesis is true.

All the primes in the 70's are emirps. [Green]

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