Question

show that no integer of the form 111,111,111,...111 is prime​

Answer 1

Answer:

Show that no integer of the form 111,111,111,...,111 is prime. 1···1=1+1+1··· + 1 but the 1's come in threes so this expression is 0 in Z3. Hence 3 divides the integer so it can not be prime.

Step-by-step explanation:

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