Re: Factor a 2048-bit number
Monty Cantsin
Hint 2: There is an observation which suggests the number may be factored. A one word hint will reveal this observation.
(I want to hold off on Hint 3 for a little while in case somebody is already working on the problem. If anybody wants me to withhold Hint 3, please post a message to the list and I may do so. It seems to me that it will be more fun to solve without Hint 3.)
Wouldn't it be neat to actually factor a 2048-bit number which was the product of two large primes?
The wording of the original challenge suggested there was a trick to this particular factorisation. My guess that q=p+2 was wrong, so square rooting (cheap) and using the 2 nearest odd integers was a loser. -- ############################################################## # Antonomasia ant@notatla.demon.co.uk # # See http://www.notatla.demon.co.uk/ # ##############################################################
Could be a Mersene prime. The largest prime mersenne found is several
hundred thousand digits long. Don't know how knowing it was a mersenne
would help the factorization though.
amp
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From: Antonomasia
Monty Cantsin
Hint 2: There is an observation which suggests the number may be factored. A one word hint will reveal this observation.
(I want to hold off on Hint 3 for a little while in case somebody is already working on the problem. If anybody wants me to withhold Hint 3, please post a message to the list and I may do so. It seems to me that it will be more fun to solve without Hint 3.)
Wouldn't it be neat to actually factor a 2048-bit number which was the product of two large primes?
The wording of the original challenge suggested there was a trick to this particular factorisation. My guess that q=p+2 was wrong, so square rooting (cheap) and using the 2 nearest odd integers was a loser.
-- ############################################################## # Antonomasia ant@notatla.demon.co.uk # # See http://www.notatla.demon.co.uk/ # ##############################################################
---------------End of Original Message-----------------
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Name: amp
E-mail: amp@pobox.com
Date: 11/21/97
Time: 14:51:33
Visit me at http://www.pobox.com/~amp
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