Why is 7 times 11 times 13 + 13 a composite n | vedclass

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Question

(B) Given expression: $7 	imes 11 	imes 13 + 13$Taking $13$ as a common factor:$= 13 	imes (7 	imes 11 + 1)$$= 13 	imes (77 + 1)$$= 13 	imes 78$

Vedclass · Accepted Answer

$1014$

Vedclass · Answer

(B) Given expression: $7 	imes 11 	imes 13 + 13$Taking $13$ as a common factor:$= 13 	imes (7 	imes 11 + 1)$$= 13 	imes (77 + 1)$$= 13 	imes 78$$= 13 	imes (13 	imes 6)$$= 2 	imes 3 	imes 13^2 = 1014$$A$ composite number is a positive integer that has at least one divisor other than $1$ and itself.Since the expression $1014$ can be expressed as a product of prime factors $(2, 3, 13)$,it is a composite number.

Why is $7 \times 11 \times 13 + 13$ a composite number? Explain.

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