[seqfan] Special primes

Antreas Hatzipolakis anopolis72 at gmail.com
Sun Mar 3 21:04:01 CET 2019


It is said that this number is prime

999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999*8*99999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
999999999999999999999999
99

Have these primes a name? And are there infinitely many of that kind?

APH



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