Pi Day MMXIX

w=0;b(){w>27&&puts("",w=0);}
p(c){b();putchar(c),b(++w);}
main(){int/**/N=0,D[][85]={{
0,1048320,4194272,8372472,1,
16646172,33030158,33030150,1
,33030144,16252928,16252928,
3932160,1,1966080,983040,1,1
,229376,57344,14336,7168,1,1
,134219520,1,1,1,1,67109312,
133169264,1,67108860,1,1,1,1
,33554431,-1},{3670016,1,1,1
,3932160,1835008,917504,1,1,
917504,458752,491520,229376,
114688,122880,57344,28672,1,
28672,14336,15360,7168,7680,
3840,1792,1920,960,448,-1},{
0,134217712,134217720,1,1,1,
62914620,31457294,31457286,1
,15728640,7340032,7864320,1,
3932160,1966080,1966080,1,1,
983040,1015808,491520,245760
,245760,122880,61440,61440,1
,30720,15360,-1},{0,0,0,0,0,
0,0,0,0,0,2097088,2097088,0,
0,0,0,0,0,0,0,0,0,-1},{0,0,0
,0,0,1048064,8259552,1,1,1,1
,16515576,15729144,504,504,1
,985024,1048320,1008,504,252
,25166332,29360632,7342064,1
,2097024,0,0,-1},},*d,C[]={1
,119,61,48,59,98,40,41,123,1
,119,62,50,55,38,38,112,117,
116,115,40,34,34,44,119,61,1
,48,41,59,125,112,40,99,41,1
,123,98,40,41,59,112,117,116
,99,104,97,114,40,99,41,44,1
,98,40,43,43,119,41,59,125,1
,109,97,105,110,40,41,123,1,
105,110,116,47,42,42,47,78,1
,61,48,44,68,91,93,91,56,53,
93,61,123,2,125,44,42,100,44
,67,91,93,61,123,3,48,125,44
,42,99,61,67,44,106,59,67,91
,56,48,93,61,40,67,91,56,48,
93,45,52,55,41,37,55,43,52,1
,56,59,105,102,40,78,60,54,1
,41,102,111,114,40,100,61,68
,91,78,63,78,45,49,58,48,93,
59,42,100,43,49,59,42,100,43
,43,45,49,38,38,112,117,116,
115,40,34,34,41,41,105,102,1
,40,42,100,45,49,41,102,111,
114,40,106,61,42,100,59,106,
59,106,47,61,50,41,112,117,1
,116,99,104,97,114,40,51,50,
43,106,37,50,42,49,53,41,59,
59,59,102,111,114,40,59,42,1
,99,59,99,43,43,41,123,105,1
,102,40,42,99,61,61,50,41,1,
102,111,114,40,106,61,48,59,
106,60,53,59,106,43,43,41,1,
123,112,40,49,50,51,41,59,59
,59,102,111,114,40,100,61,68
,91,106,93,59,42,100,43,1,49
,59,112,40,52,52,41,41,1,119
,43,61,112,114,105,110,1,116
,102,40,34,37,100,34,44,1,42
,100,43,43,41,59,112,40,1,52
,53,41,59,112,40,52,57,41,59
,112,40,49,50,53,41,59,1,112
,40,52,52,41,59,125,101,108,
115,101,32,105,102,40,1,42,1
,99,61,61,51,41,102,111,1,1,
114,40,100,61,67,59,42,100,1
,59,112,40,52,52,41,41,119,1
,43,61,112,114,105,110,116,1
,102,40,34,37,100,34,44,42,1
,100,43,43,41,59,1,101,108,1
,115,101,32,105,102,40,42,99
,62,49,41,112,40,42,99,41,59
,125,102,111,114,40,106,61,1
,53,59,45,1,45,106,59,112,40
,53,57,41,1,41,59,1,1,1,125,
0},*c=C,j;C[80]=(C[80]-47)%7
+48;if(N<6)for(d=D[N?N-1:0];
*d+1;*d++-1&&puts(""))if(*d-
1)for(j=*d;j;j/=2)putchar(32
+j%2*15);;;for(;*c;c++){if(*
c==2)for(j=0;j<5;j++){p(123)
;;;for(d=D[j];*d+1;p(44))w+=
printf("%d",*d++);p(45);p(49
);p(125);p(44);}else if(*c==
3)for(d=C;*d;p(44))w+=printf
("%d",*d++);else if(*c>1)p(*
c);}for(j=5;--j;p(59));};;;;

Try it online. Happy pi day.

Winter MMXVIII

                                         I                                         
                                        ,O;                                        
                                       main(                                       
                                      ){char*                                      
                                     Q,_[]={73                                     
                                    ,44,79,59,2                                    
                                   ,109,97,105,2                                   
                                  ,110,40,41,123,                                  
                                 99,104,97,114,42,                                 
                                81,44,95,91,93,61,2                                
                               ,123,1,48,125,44,42,2                               
                              ,74,59,102,111,114,40,2                              
                             ,81,61,95,44,73,61,79,61,                             
                            48,59,42,81,59,43,43,81,41,                            
                           123,105,102,40,42,81,60,50,41                           
                          ,102,111,114,40,74,61,95,59,42,                          
                         74,59,74,43,43,41,73,60,49,38,38,                         
                        112,114,105,110,116,102,40,34,37,42                        
                       ,99,34,44,52,50,45,79,47,50,45,49,44,                       
                      51,50,41,44,73,43,61,112,114,105,110,2,                      
                     116,102,40,34,37,100,34,44,42,74,41,44,73                     
                    ,62,79,63,73,61,48,44,79,43,61,50,44,112,2,                    
                   117,116,115,40,34,34,41,58,48,44,73,43,43,60,                   
                  49,63,112,114,105,110,116,102,40,34,37,42,99,34                  
                 ,44,52,50,45,79,47,50,44,52,52,41,58,112,117,116,                 
                99,104,97,114,40,52,52,41,44,73,62,79,63,73,61,48,2                
               ,44,79,43,61,50,44,112,117,116,115,40,34,34,41,58,48,               
              59,105,102,40,42,81,62,50,41,73,43,43,60,49,63,112,114,              
             105,110,116,102,40,34,37,42,99,34,44,52,50,45,79,47,50,44             
            ,42,81,41,58,112,117,116,99,104,97,114,40,42,81,41,44,73,62            
           ,79,63,73,61,48,44,79,43,61,50,44,112,117,116,115,40,34,34,41           
          ,58,48,59,125,102,111,114,40,73,61,48,59,73,43,43,60,49,55,59,2          
         ,112,117,116,99,104,97,114,40,52,55,41,41,59,102,111,114,40,73,61         
        ,112,117,116,115,40,34,34,41,59,73,43,43,60,53,59,112,117,116,115,2        
       ,40,34,34,41,41,123,112,114,105,110,116,102,40,34,37,42,99,34,44,51,2       
      ,50,44,52,55,41,59,102,111,114,40,74,61,48,59,74,43,43,60,50,48,59,41,2      
     ,2,112,117,2,116,99,2,2,104,2,97,2,114,2,40,52,2,55,41,2,59,125,2,2,125,2     
    ,2,0},*J;for(Q=_,I=O=0;*Q;++Q){if(*Q<2)for(J=_;*J;J++)I<1&&printf("%*c",42-    
   O/2-1,32),I+=printf("%d",*J),I>O?I=0,O+=2,puts(""):0,I++<1?printf("%*c",42-O/   
  2,44):putchar(44),I>O?I=0,O+=2,puts(""):0;if(*Q>2)I++<1?printf("%*c",42-O/2,*Q)  
 :putchar(*Q),I>O?I=0,O+=2,puts(""):0;}for(I=0;I++<17;putchar(47));for(I=puts(""); 
I++<5;puts("")){printf("%*c",32,47);for(J=0;J++<20;)putchar(47);}}/////////////////
                               /////////////////////                               
                               /////////////////////                               
                               /////////////////////                               
                               /////////////////////                               

Try it online.

Prime Intirety

Since ancient times humanity knew that there are infinitely many primes — though countable, writing a complete list of every prime is impossible if one intends to finish.
However, in practice one often only considers a minute subset of the naturals to work with and think about. When writing low-level languages like C, one is nearly forced to forget about almost every natural number — the data type u_int_32, for example, is only capable of representing \{\mathbb{N}_0\ni n<2^{32}\}.
Therefore, it is possible to produce a complete list of every prime representable in thirty-two bits using standard bit pattern interpretation — the entirety of the first 203\,280\,221 primes.

Generating said list took about two minutes on a 4GHz Intel Core i7 using an elementary sieve approach written in C compiled with gcc -O2.
All primes are stored in little-endian format and packed densely together, requiring four bytes each.

Using the resulting file, one can quickly index the primes, for example p_{10^7} = 179\,424\,691 = \text{ab1cdb3}_{16} (using zero-based indexing). Since each prime is stored using four bytes, the prime’s index is scaled by a factor of four, resulting in its byte index.

dd status=none ibs=1 count=4 if=primes.bin skip=40000000 | xxd 
00000000: b3cd b10a                                ....

Source code: intirety.c
Prime list: primes.bin (775.5 MiB)