Discuss Forum
1. What is the greatest prime factor of ( 2 4 ) 2 − 1 ?
- A. 3
- B. 3
- C. 3
- D. 3
Answer: Option D
Explanation:
(2^4)− 1
=(2^4 + 1)(2^4−1)[a^2 − b^2=(a + b)(a−b) ]
= (16 - 1) (16 - 1)
= 17 15 = 17 x 5 × 3
.:. সর্বোচ্চ মৌলিক সংখ্যা = 17
=(2^4 + 1)(2^4−1)[a^2 − b^2=(a + b)(a−b) ]
= (16 - 1) (16 - 1)
= 17 15 = 17 x 5 × 3
.:. সর্বোচ্চ মৌলিক সংখ্যা = 17
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