How do we prevent miraculously true DC results from manual submit?

[Mark Rose]

That's if you submit a residue for the same exponent. But if someone is seeking credit, the smart thing to do would be to spread the fake residues out across many exponents. Eventually a match will be found.

[rudy235]

Along with more than 100 incorrect results (maybe even more than 200) for one user, a match would be found eventually.

Someone once said that it 10,000,000 monkeys banged 10 million pianos for 200,000,000 centuries one would eventually play the 4th movement of Beethoven 9th Symphony.

[LaurV]

Originally Posted by rudy235

Someone once said that it 10,000,000 monkeys banged 10 million pianos for 200,000,000 centuries one would eventually play the 4th movement of Beethoven 9th Symphony.

This is false, and the proof is the invention of internet. Two billion monkeys in front of the keyboards for almost a century, and nobody wrote a Shakespeare yet...

[LaurV]

Originally Posted by Siegmund

As soon as you submit a doublecheck, matching or not, both residues get displayed full length. (At least on your own screen; I assume on everybody's.)

Oh? I thought the full residue is only displayed after a DC match. And not before.
And if you are after lots of DC credit, just submit lots of TCs for exponents already legally DCed (different users, etc). You still get the DC credit, this is for sure, and for free, and without a lot of trial/fail stuff...

[ATH]

You cannot see the full residue until a match is found:
http://mersenne.org/M58930367

Unverified 2013-07-21 CJCorley 27E5644101AE86__
Unverified 2017-05-12 endless_mike FE321A206ADB61__

[rudy235]

Originally Posted by LaurV

Originally Posted by rudy235
Someone once said that it 10,000,000 monkeys banged 10 million pianos for 200,000,000 centuries one would eventually play the 4th movement of Beethoven 9th Symphony.
This is false, and the proof is the invention of internet. Two billion monkeys in front of the keyboards for almost a century, and nobody wrote a Shakespeare yet...This is false, and the proof is the invention of internet. Two billion monkeys in front of the keyboards for almost a century, and nobody wrote a Shakespeare yet...

Actually, if you read what I said it is true..."Someone once said...."

[retina]

Originally Posted by LaurV

Two billion monkeys in front of the keyboards for almost a century, and nobody wrote a Shakespeare yet...

Thank goodness for that.

[retina]

Originally Posted by rudy235

Someone once said that it 10,000,000 monkeys banged 10 million pianos for 200,000,000 centuries one would eventually play the 4th movement of Beethoven 9th Symphony.

And the first monkey was Beethoven, with many subsequent monkeys afterwards. And it took a lot less than 200,000,000 centuries.

[science_man_88]

Originally Posted by Mark Rose

That's if you submit a residue for the same exponent. But if someone is seeking credit, the smart thing to do would be to spread the fake residues out across many exponents. Eventually a match will be found.

not necessarily the odds of each one not matching is 255/256 so the odds of n independent guesses not matching is (255/256)^n which falls under 50% at about 178 guesses but is never 0% until n is infinite. the pigeonhole principle assuming all 2 digit endings are equally likely would suggest a 1 in 256 chance of matching for any given residue ending.

[GP2]

Originally Posted by science_man_88

not necessarily the odds of each one not matching is 255/256 so the odds of n independent guesses not matching is (255/256)^n which falls under 50% at about 178 guesses but is never 0% until n is infinite. the pigeonhole principle assuming all 2 digit endings are equally likely would suggest a 1 in 256 chance of matching for any given residue ending.

It would be simple enough to mask three or four of the sixteen hex digits of unverified residues, rather than just two. This would be a trivial change, maybe after a short announced transition to allow automated scripts to adjust, if necessary.

Probably having only the last two hex digits masked is a legacy from the days when we were still verifying old pre-GIMPS results that had only four or five hex digit residues rather than the current sixteen. But all of those have long since been double checked to the full sixteen hex digits.

[Xyzzy]

Originally Posted by GP2

It would be simple enough to mask three or four of the sixteen hex digits of unverified residues, rather than just two.