Udowodnij , że liczba a= 25^5 - 3^12 jest podzelna przez 13 .
25 * 25* 25 * 25 * 25 =9765625
3*3*3*3*3*3*3*3*3*3*3*3=531441
9765625-531441=9234184
9234184 / 13 =710321,846153
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25 * 25* 25 * 25 * 25 =9765625
3*3*3*3*3*3*3*3*3*3*3*3=531441
9765625-531441=9234184
9234184 / 13 =710321,846153