In order to go work on the exercise, you can pick up the number of digits in the integers concerned by this congruence relation:

Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.

- Description: find a prime for the base of a congruence relation. WIMS site
- Keywords: interactive mathematics, interactive math, server side interactivity, algebra, arithmetics, number theory, congruence, factorization, preme, factor