## Pictures of Primes

picture of odd primes < 8192
The above picture is a matrix of 64 rows and 64 columns
of altogether 4096 black or white squares. The squares
are numbered (in row major order) from 0 to 4095. The n-th
square is black iff the number 2n + 1 is prime. For example, the black
square in the right upper corner represents the prime 127,
and the black square in the right lower corner represents
the prime 8191. You can observe, besides many twin primes,
the two kinds of triple primes (patterns `xx_x`

resp. `x_xx`

) and some quadruple primes (pattern
`xx_xx`

).

The picture
below is a 256 by 128 matrix which shows all odd primes < 2^16 = 65536.

`data file`

` bigger primes `

` top of document `

Otto Forster
(), 95-05-16/97-04-30