Question

please tell me the answer

Answer 1

=>2*7*11*17*23+23
=>Take 23 common,
=>23(2*7*11*17*1+1)
=>23(2618+1)
=>23(2619)
=>now, take LCM of 2619
=> by taking LCM of 2619, factors came out are
=>3*3*3*97
=>23*3*3*3*97.
therefore: it is composite number because it has more than one factor.

Answer 2

From the given question take 23 as common
=23(2*7*11*17+1)
=23(14*11*17+1). (according to the BODMAS)
=23(2619)
therefore it is a composite number