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What is the greatest prime factor of (24)2 -1?

What is the greatest prime factor of (24)2 -1? Correct Answer 17

(24) -  1  = (24  +  1)(24 - 1)  [a2  -  b2  =  (a  +  b)(a - b) ] = (16 - 1) (16 - 1) = 17 15 = 17 x 5 × 3 .:. সর্বোচ্চ মৌলিক সংখ্যা = 17

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