Palindromic primes

Object-type: 
Table

According to Bob Tagge, the quintessens of order is constituted by palindromic prime numbers. He calculated hundreds of pages by hand, and had them sometimes printed out by a typesetter also living on the premises of the De Hartekamp Estate. 

A special case is the palindromic prime pyramid. The original print has been lost, a recontruction of the top of this pyramid, based on notes from his diary is reproduced below.

2
121
30203
133020331
1713302033171
12171330203317121
151217133020331712151
1815121713302033171215181
16181512171330203317121518161
331618151217133020331712151816133
9333161815121713302033171215181613339
11933316181512171330203317121518161333911