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Old 2021-05-18, 16:13   #221
drkirkby
 
"David Kirkby"
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I just noticed the twin-prime I posted had a LL without any zeros near the end. If you want to compute its PRP you could do so. Whether you take a LL residual or PRP residual, the residual is not going to give you any indication whatsoever of how close you are to a Mersenne Prime.

Dave

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Old 2021-05-18, 16:23   #222
drkirkby
 
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Quote:
Originally Posted by kriesel View Post
24036583 is an ordinary 8-decimal-digit prime, not a Mersenne prime. M24036583 =224036583-1 is a Mersenne prime, of 7,235,733 decimal digits (Mp#41), so 24036583 also is the exponent of a known Mersenne prime.
Yeah, I take your point - it touches on what I asked on another forum, although I did start my post here saying exponent. But I agree 24036583 is not a Mersenne prime, but rather 2^24036583 -1 is.
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Old 2021-05-18, 16:30   #223
drkirkby
 
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It seems I made quite a few errors in my post. Anyway, the fact remains that the residual, whether PRP or LL, is not going to tell you anything about how close you are to a finding a Mersenne Prime.

Hence personally I think testing around 168 million is a bit pointless as

a) It is too low to win the $50,000 prize
b) A PRP test requires considerably more computational resources than a more modest value like 103-110 million.

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Old 2021-05-18, 17:49   #224
Uncwilly
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Quote:
Originally Posted by drkirkby View Post
Anyway, the fact remains that the residual, whether PRP or LL, is not going to tell you anything about how close you are to a finding a Mersenne Prime.
This is correct.
Quote:
Hence personally I think testing around 168 million is a bit pointless as
Once we have tested those below that range, we will test them too. We want to make sure that we know the M54 is M54 and not M55. But it makes no sense to test them until we get to that range. The machines that we will have then will be better for testing those numbers.
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Old 2021-05-31, 22:52   #225
tuckerkao
 
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Quote:
Originally Posted by Uncwilly View Post
We have a loooong way to go to say it will be the longest gap.

2013-01-25 - 2009-04-12 = 1384 days
1996-09-03 - 1994-01-04 = 973 <- sort of counts.
2015-09-17 - 2013-01-25 = 965
2001-11-14 - 1999-06-01 = 897 days

As of now we are 882 days
It's only 1 hour and 8 minutes away from turning June, 2021 according to the server time.

882 + 25 = 907 days (06/01/2021)

Pretty confident this gap will be at least the 2nd longest unless I land on that Mersenne Prime myself.
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Old 2021-06-01, 02:18   #226
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Hello Again,

My new prediction for the next known (to humankind) Mersenne Prime is

Using Maple as a tool to compute on just a computer :--)

next prime(900 000 000) which is 900 000 011

The date is April 1st of 2022.

Regards,

Matt
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Old 2021-06-01, 02:24   #227
tuckerkao
 
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Quote:
Originally Posted by MattcAnderson View Post
Hello Again,

My new prediction for the next known (to humankind) Mersenne Prime is

Using Maple as a tool to compute on just a computer :--)

next prime(900 000 000) which is 900 000 011

The date is April 1st of 2022.

Regards,

Matt
It's impossible, that exponent already had a known factor -
https://www.mersenne.org/report_expo...exp_hi=&full=1
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Old 2021-06-01, 02:32   #228
Uncwilly
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Quote:
Originally Posted by tuckerkao View Post
It's impossible, that exponent already had a known factor -
https://www.mersenne.org/report_expo...exp_hi=&full=1
Wow, something useful from you.
BTW, you should use the [M] tags (there is a button for them on the advance editor.)
[M]900000011[/M] 900000011
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Old 2021-06-01, 02:42   #229
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Hi all again,

My new new prediction is MersennePrime of (1 000 000 00 7)
[


and the date for that is January the first of 21 01


: --- )
Cheers


Mr. Matt
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Old 2021-06-01, 03:06   #230
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Quote:
Originally Posted by MattcAnderson View Post
Hi all again,

My new new prediction is MersennePrime
Sorry that is not acceptable. Rule 4 was invoked by your guess of a number with a known factor. See you at the end of July.

Last fiddled with by Uncwilly on 2021-06-01 at 03:07
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Old 2021-06-01, 03:19   #231
MattcAnderson
 
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For what it's worth

Mersenne Prime( 9 000 00 917)

December 31 2021




Matt
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