A program that once compiled creates an executable file, primegap. What primegap does is calculate the largest gap in consecutive prime numbers using the GMP library.
Sample run:
./primegap
Usage: ./primegap a b
./primegap 0 10
Largest prime gap in [0, 10] is 2
computed in 0.0e+00 seconds
./primegap 1 100
Largest prime gap in [1, 100] is 8
computed in 0.0e+00 seconds
./primegap 1 10000
Largest prime gap in [1, 10000] is 36
computed in 2.8e+02 seconds