Predict M52

[Uncwilly]

Originally Posted by sweety439

You lost my post #75

I have added it, sorry for the oversight. BTW, it has been factored.

[kriesel]

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

[Uncwilly]

Originally Posted by Uncwilly

Current status update:

These are currently within a month (they will have to wait 60 days after the date has passed to guess again):

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

Originally Posted by Prime95

I'll be leaving for an extended trip and ....

[sweety439]

Originally Posted by Uncwilly

I have added it, sorry for the oversight. BTW, it has been factored.

What are its prime factors?

[Uncwilly]

Originally Posted by sweety439

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

[sweety439]

Originally Posted by Uncwilly

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?

[Uncwilly]

Originally Posted by sweety439

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.

[storm5510]

2^109123789-1.

October 2020.

[Uncwilly]

Originally Posted by storm5510

2^109123789-1.

October 2020.

https://www.mersenne.ca/exponent/109123789

Originally Posted by Uncwilly

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.

[kriesel]

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

[mathwiz]

Maybe he meant this:

? nextprime(109123789)
%2 = 109123811

with no known factors or primality tests, per https://www.mersenne.org/report_expo...exp_hi=&full=1