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Help needed! (Number theory)

The problem is from BMO-1993. Please guide me how to solve this problem.

Note by Akshay Yadav
8 months, 3 weeks ago

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The no should be of the form 1001n+1=x^2OR 1001n=(x-1)(x+1) since x sqr is 6 digit x is 3digits thus we keep x minus one or x plus one =multiples of143(a multiple of 1001) and tk the sol Keep the multiple s repeatedly intil 6digit sqr comes Himanshu Singh · 8 months, 2 weeks ago

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@Himanshu Singh Good approach :) Calvin Lin Staff · 8 months, 2 weeks ago

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Hint: Write out the mathematical equation for the statement.

Hint: quadratic diophantine equations - solve by factoring Calvin Lin Staff · 8 months, 2 weeks ago

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I do not know what is slack Himanshu Singh · 8 months, 2 weeks ago

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@Himanshu Singh It is platform on which you can interact with many people present on Brilliant. It is instant messaging like Whatsapp. Akshay Yadav · 8 months, 2 weeks ago

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R u giving inmo tomorrow Himanshu Singh · 8 months, 2 weeks ago

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@Himanshu Singh You can talk to me on Slack also. Akshay Yadav · 8 months, 2 weeks ago

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@Himanshu Singh No I was not selected for that. Akshay Yadav · 8 months, 2 weeks ago

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183184 Himanshu Singh · 8 months, 2 weeks ago

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@Himanshu Singh How did you got this answer? Akshay Yadav · 8 months, 2 weeks ago

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@Akshay Yadav By the way do u giv rmo etc Himanshu Singh · 8 months, 2 weeks ago

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@Himanshu Singh Yes I had given RMO. Akshay Yadav · 8 months, 2 weeks ago

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