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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The reversal of 2^{70} is prime. [Somer] The prime formed from the reversal of 2^{70} 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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