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Old 2019-12-20, 14:58   #89
Uncwilly
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Quote:
Originally Posted by sweety439 View Post
You lost my post #75
I have added it, sorry for the oversight. BTW, it has been factored.
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Old 2019-12-20, 16:42   #90
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PRP runs on 146456881, 258150181, & 282362693 are projected to complete in April, January, and April respectively. Lingering guesses from M51, M50, M45, and various dubious claims in other threads are also being run if possible with current technology. This cleanup/catchup is expected to essentially complete in 2020, except for 3 untestably large 66-bit to 127-bit exponent claims. Our collective track record of predicting Mersenne primes remains perfect so far. See https://www.mersenneforum.org/showpo...04&postcount=5
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Old 2020-01-02, 20:58   #91
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Quote:
Originally Posted by Uncwilly View Post
Current status update:

These are currently within a month (they will have to wait 60 days after the date has passed to guess again):
Code:
Who		When guessed	Exponent	When found
...
firejuggler	1/2/2019	85020577	1/1/2020
moebius  	12/14/2018			1/13/2020
Viliam Furik	12/3/2019	91305491	1/18/2020
Quote:
Originally Posted by Prime95 View Post
I'll be leaving for an extended trip and ....
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Old 2020-02-11, 04:15   #92
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Quote:
Originally Posted by Uncwilly View Post
I have added it, sorry for the oversight. BTW, it has been factored.
What are its prime factors?
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Old 2020-02-11, 05:22   #93
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Quote:
Originally Posted by sweety439 View Post
What are its prime factors?
You can use this handy tool on the website to check: https://www.mersenne.org/report_exponent/
Or on this site: https://www.mersenne.ca/exponent/94539113
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Old 2020-02-11, 11:00   #94
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Quote:
Originally Posted by Uncwilly View Post
You can use this handy tool on the website to check: https://www.mersenne.org/report_exponent/
Or on this site: https://www.mersenne.ca/exponent/94539113
Well, can you add it to the list in post #87?
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Old 2020-02-11, 15:18   #95
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Quote:
Originally Posted by sweety439 View Post
Well, can you add it to the list in post #87?
I am not going to go back and update the post. I have the guess in my spreadsheet.
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Old 2020-02-11, 17:41   #96
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2109123789-1.

October 2020.
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Old 2020-02-11, 18:03   #97
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Quote:
Originally Posted by storm5510 View Post
2109123789-1.

October 2020.
https://www.mersenne.ca/exponent/109123789
Quote:
Originally Posted by Uncwilly View Post
THE RULES OF THE GAME:
  1. Post your guess here, no PM'ing.
  2. Your guess must include a prime number (we are guessing the exponent) and/or date of discovery. No ranges, they may be ignored (or we may take the worst case of the range as the choice.) Failure to guess a prime number will count against you and impose a wait as in rule 6.

Last fiddled with by Uncwilly on 2020-02-11 at 18:03
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Old 2020-02-11, 19:01   #98
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https://www.alpertron.com.ar/ECM.HTM
109 123789 = 883 × 123583
A composite exponent produces a composite Mersenne number.
https://www.mersenneforum.org/showpo...13&postcount=4

Last fiddled with by kriesel on 2020-02-11 at 19:05
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Old 2020-02-11, 20:15   #99
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Maybe he meant this:

Code:
? nextprime(109123789)
%2 = 109123811
with no known factors or primality tests, per https://www.mersenne.org/report_expo...exp_hi=&full=1
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