7×11×13+13 औ और 7×6×5×4×3×2×1+5 किसलिए विलाज्यसख्यााहै।
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1st case
7*11*13+13 = 13(7*11+1) = 13*78 = 13*2*3*13
Since it has more than two prime factors, it is a composite number.
Similarly,
2nd case
7*6*5*4*3*2*1+5 = 5(7*6*4*3*2*1+1) = 5*1009
Since it has more than two prime factors, it is a composite number.
7*11*13+13 = 13(7*11+1) = 13*78 = 13*2*3*13
Since it has more than two prime factors, it is a composite number.
Similarly,
2nd case
7*6*5*4*3*2*1+5 = 5(7*6*4*3*2*1+1) = 5*1009
Since it has more than two prime factors, it is a composite number.
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7x11x13+13
13(7x11+1)
13x78
13x13x6 प्रमाणित
7x6x5x4x3x2x1+5
5(7x6x4x3x2x1+1)
5x1049 प्रमाणित
13(7x11+1)
13x78
13x13x6 प्रमाणित
7x6x5x4x3x2x1+5
5(7x6x4x3x2x1+1)
5x1049 प्रमाणित
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