On December 26, 2017, the 50th known Mersenne prime was found: 2 raised to a power of 77232917-1. This number contains 23249425 digits if written in the decimal system. It is the largest currently known prime number. The discoverer is Jonathan Pace, an electrical engineer from Germantown Tennesse, USA. More info: http://www.mersenne.org
Gadgets with the Ulam spiral: Computation and visualization of prime numbers and more…
This interactive CDF computes the Ulam Spiral for a given start value 0,1,2,.. which can also be negative. Interesting structures of the Ulam spiral can be seen on the 4 horizontal/vertical and 4 diagonal lines in the four quadrants. Those 8 lines belong to an startpoint, which can also be offset to the center of…
animation of the zeta function showing the zeros
animation of the zeta function along the critical line by using the product representation (complex doman)
rotating sphere with r^2=11!
Rotierende Kugel mit ganzzahligen Gitterpunkten (r^2= 11!)
Prime number song
This is the prime number song from chapter 15.2: “Prime number song”
lattice-points on a 4-dimensional sphere with r^2= 10007
This is a video from chapter 9.3