1.

7×11×13+13 it is prime or composite

Answer»

It is COMPOSITE NUMBER
7 \times 11 \times 13 + 13 \\ 13(7 \times 11 \times 1 + 1) \\ 13(7 7 + 1) \\ 13 \times 78
so this number have more than 2FACTORS(1,13,78)



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