1×2×3×4×5×6×7+5 is a composite no...
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1×2×3×4×5×6×7+5=5045.. SO... It's contains more than 2 factors.. So it is composite number
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All you have to do is take the common factor out.. 1. 7x11x13+13 = 13 x (7x11+1) == Thus, it becomes composite 2. 7x6x5x4x3x2x1+5 = 5 x (7x6x4x3x2x1+1) == Thus, it becomes composite
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