Explores the n queens problem on a toroidal chessboard when n is prime, discussing solutions with queens on lines of constant slope.
R function to generate Ulam Prime Spiral, a visualization of prime numbers in a spiral grid.
Explores the distribution of digits in decimal fractions of prime denominators, with examples in Python.
Explains how to compute a square root of -1 modulo a prime p, using number theory and Python code examples.
Explores bi-twin prime chains, a mathematical pattern where sequences of twin primes follow a doubling rule, with examples and Python verification code.
A new record for the largest known 'compositorial prime' has been set, a prime number with over 3.7 million digits.
A tutorial on Clojure programming, covering basic functions and implementing a prime number sieve as a learning exercise.
Using R code to generate permutations of digits (2,2,5,5,9,9), analyzing divisibility by 11 and primality.
