[seqfan] Re: Special primes

[Ray Chandler]

Kamada calls them near-repdigit palindromes, see https://stdkmd.net/nrr/9/99899.htm .

De Geest calls them palindromic wing primes, see http://www.worldofnumbers.com/wing.htm#pwp989 .

See A077794 and A183187 in OEIS.

See A002385 for a number of more references to palindromic primes in general.  
Ray

> -----Original Message-----
> From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Antreas
> Hatzipolakis
> Sent: Sunday, March 3, 2019 2:04 PM
> To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> Subject: [seqfan] Special primes
> 
> 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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