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

5
6
8
10
12
15
20

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- Description: find a prime for the base of a congruence relation. serveur web interactif avec des cours en ligne, des exercices interactifs en sciences et langues pour l'enseigment primaire, secondaire et universitaire, des calculatrices et traceurs en ligne
- Keywords: math, interactif, exercice,qcm,cours,classe,biologie,chimie,langue,interactive mathematics, interactive math, server side interactivity,exercise,qcm,class, algebra, arithmetic, number_theory, congruence, factorization, primes, modular_arithmetic