Prime Number Patterns
Move your pointer across the graphic. The prime numbers are those that are only intersected by two curves; a composite number yields curves with semicircles whose diameters are the divisors of the number.[more]
The plot label shows the integer, its divisors, the divisor function, the aliquot sum, and whether the integer is deficient, perfect, or abundant.[less]
This Demonstration is based on Prime Number Patterns by Jason Davies.
"Prime Number Patterns"
Wolfram Demonstrations Project
Published: January 22 2013