An implementation of Donald E. Knuth’s “‘Super-random’ number generator” given as an educational example of a bad pseudo random number generator in chapter 3.1 of his “The Art of Computer programming” series of books.
The input value 6065038420 is a fixed point of the algorithm. For other input values, the algorithm has a cycle length of around 3000, making it a pretty bad random number generator.
Knuth summarized these properties by concluding “The moral of this story is that random numbers should not be generated with a method chosen at random. Some theory should be used.”