Maths / Real Numbers / Prime Factorization

QUESTION
 

Explain why   large 3X13X17X5^+_-2X17X5 is a composite number ?

EXPLANATION
Explain TypeExplanation Content
Text

(1) 3X13X17X5+2X17X5

=17X5(3X13+2)

=85(39+2)

=85X41

=3485

=17X5X41X1

(2) 3X13X17X5-2X17X5

=17X5(3X13-2)

=85(39-2)

=3145

=17X5X37X1

As 3485 and 3145 both have prime factors other than 1 and the number itself.Therefore,both numbers are composite.

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