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Bob and Alice make a poor choice (Posted on 2017-08-11) Difficulty: 3 of 5

Factor the semiprime:

4069102376343910986355021110116130565225765903463275841

No Solution Yet Submitted by broll    
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re: solution (spoiler) - precision check | Comment 2 of 7 |
(In reply to solution (spoiler) by Charlie)

The number is not a perfect square, look at both sides mod 1000:

841 = 79^2 mod 1000 implies 841 = 241 mod 1000, a false statement.  But the semiprime is still extremely close to a square.

  Posted by Brian Smith on 2017-08-11 12:52:00
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