fond of a factor? Urn yourself to become remains

[penlu]

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

M88729169 is split by:

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

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

4524761281 / 18933750 ~ 238.98

[Jwb52z]

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.

[storm5510]

I have found two new factors for M66301 with GMP-ECM 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?

[ATH]

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

[GP2]

Originally Posted by storm5510

I have found two new factors for M66301 with GMP-ECM 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?

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

M66301 has a factor: nnnnnnnnnnnnnnn
M66301 has a factor: xxxxxxxxxxxxxxxxx

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.

[Batalov]

Originally Posted by storm5510

I have found two new factors for M66301 with GMP-ECM which are not on the server.

Make sure that the new factors are not simply products of the three known small factors.
An easy way to see those is in https://www.mersenne.ca/exponent/66301

[storm5510]

Originally Posted by Batalov

Make sure that the new factors are not simply products of the three known small factors.
An easy way to see those is in https://www.mersenne.ca/exponent/66301

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.

[James Heinrich]

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):
https://www.mersenne.ca/factor.php
https://www.alpertron.com.ar/ECM.HTM

[storm5510]

Originally Posted by James Heinrich

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):
https://www.mersenne.ca/factor.php
https://www.alpertron.com.ar/ECM.HTM

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

[petrw1]

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)

[lycorn]

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...)

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