This time CUDAPm1's Brent-Suyama extension actually helped!

M88729169 is split by:

[QUOTE]
Factor: 203879517521451990434959 / (P-1, B1=765000, B2=18933750, e=6, n=5184K CUDAPm1 v0.20)
[/QUOTE]

203879517521451990434959 - 1 = 2 × 3 × 7 × 107 × 113 × 4524761281 × 88729169

4524761281 / 18933750 ~ 238.98

P-1 found a factor in stage #2, B1=730000, B2=13322500.
UID: Jwb52z/Clay, M89800379 has a factor: 21299539644933319630246941103 (P-1, B1=730000, B2=13322500)

94.105 bits.

GMP-ECM
 

I have found two [U]new[/U] factors for M66301 with [I]GMP-ECM[/I] which are not on the server. It does not create a results file so I made screen captures of the pertinent areas which shows the work. I do not know what to do with them. Suggestions? :confused2:

Go to mersenne.org and make sure you are logged in with your account in the top right corner, then go to "Manual Testing - results" and paste this:

UID: user/computer, M66301 has a factor: xxxxx
UID: user/computer, M66301 has a factor: xxxxx

but change the 2 "xxxxx" to the 2 factors and "user" to your username, the one you have in Prime95 prime.txt in the line "UserID=", and change "computer" to whatever computer name you use, but it does not really matter. You can use the ID from the line "ComputerID=" in Prime95 local.txt

[QUOTE=storm5510;502179]I have found two [U]new[/U] factors for M66301 with [I]GMP-ECM[/I] which are not on the server. It does not create a results file so I made screen captures of the pertinent areas which shows the work. I do not know what to do with them. Suggestions? :confused2:[/QUOTE]

If you don't care about receiving GHz-days points, you can just go to [url]https://www.mersenne.org/manual_result/[/url] and type in

[CODE]
M66301 has a factor: nnnnnnnnnnnnnnn
M66301 has a factor: xxxxxxxxxxxxxxxxx
[/CODE]

This will credit you as the discoverer (if you are logged in) but give you basically zero GHz-days.

If you want the GHz-days, I imagine you'd probably have to contact an admin to handle it manually.

[QUOTE=storm5510;502179]I have found two [U]new[/U] factors for M66301 with [I]GMP-ECM[/I] which are not on the server. :confused2:[/QUOTE]
Make sure that the new factors are not simply products of the three known small factors.
An easy way to see those is in [URL]https://www.mersenne.ca/exponent/66301[/URL]

[QUOTE=Batalov;502192]Make sure that the new factors are not simply products of the three known small factors.
An easy way to see those is in [URL]https://www.mersenne.ca/exponent/66301[/URL][/QUOTE]

They are both composites of the three on the server.

29,698,252,545,089 and 14,728,298,367,798,007,046,809.

I am glad you made the above posting. Next time, if there is one, I will know how to check. Thank you.

:smile:

If you ever need to do a quick check if a found factor is prime or composite, for small (<46 digits) numbers you can use my site, or for numbers of any size you can use Dario's Interger Factorization Calculator (which is better in pretty much every way):
[url]https://www.mersenne.ca/factor.php[/url]
[url]https://www.alpertron.com.ar/ECM.HTM[/url]

[QUOTE=James Heinrich;502224]If you ever need to do a quick check if a found factor is prime or composite, for small (<46 digits) numbers you can use my site, or for numbers of any size you can use Dario's Interger Factorization Calculator (which is better in pretty much every way):
[URL]https://www.mersenne.ca/factor.php[/URL]
[URL]https://www.alpertron.com.ar/ECM.HTM[/URL][/QUOTE]

I have been using your site. The ones in your links do not waste any time. Thanks! :smile:

I hope I'm not stealing his thunder.....
 

Anton Repko Manual testing 4591 F-ECM 2018-12-13 07:52 0.0 3420.2395 Factor: 622304041006452740824160434864315474346236458056663 / (ECM curve 898, B1=110000000, B2=900514153782)

I did notice it too.
The sub 10K range is one step closer to be cleared (which doesn´t necessarily mean it will ever be...) :smile:

Given the amount of credit earned and the large B2 value, this one appears to have been found using GMP-ECM