mersenneforum.org - primes of the form (123+4^(9*10^n))/163

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enzocreti

2020-02-17 16:28

primes of the form (123+4^(9*10^n))/163

Are there infinitely many prime of the form

(123+4^(9*10^n))/163/31? with n some integer

(4^90000+123)/163/31 is prime?

Or are there other factors?

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