A vernacular 1051 digit probable prime

[EdH]

I see where my mistake was for those that read the original... More later.

[GP2]

Originally Posted by EdH

For me, I had an answer in just over two minutes with an i7 laptop. But, of course, I'm already running Primo.

If you're using a recent distro like Ubuntu 18.10, then the pari-gp package is version 2.11 and it has the primecert function. I don't think it's as efficient as Primo, but for very small numbers that doesn't matter.

Primo is a weird piece of software, and for unclear reasons.

[EdH]

Originally Posted by GP2

If you're using a recent distro like Ubuntu 18.10, then the pari-gp package is version 2.11 and it has the primecert function. I don't think it's as efficient as Primo, but for very small numbers that doesn't matter.

Primo is a weird piece of software, and for unclear reasons.

Thanks! I've been procrastinating the upgrades and have been using Primo extensively through a few versions. I really should expand my knowledge base, though. Will factordb accept the primecert documents?

[EdH]

Originally Posted by EdH

I see where my mistake was for those that read the original... More later.

OK, I think I'm on the right page now and ran the correct number through Primo.

[GP2]

Originally Posted by EdH

Thanks! I've been procrastinating the upgrades and have been using Primo extensively through a few versions. I really should expand my knowledge base, though. Will factordb accept the primecert documents?

Yes, using the flag , 1) in the primecertexport command creates a Primo version 4 certificate. So it can be submitted to FactorDB, assuming that FactorDB has fixed the recent problem that prevents people from submitting certificates.

I have only used it for very small numbers. It is probably less efficient than Primo, and I don't think there's any way to interrupt and resume the function if it takes a very long time to run.

[Batalov]

Originally Posted by paulunderwood

Yes.

Isn't it nice when you joke and people laugh with you!...
...oh wait. ...they are actually laughing at you. That's probably a good sign to try to smarten up and think before you speak next time.

I know, I know, my advice is totally wasted here. (based on previous experience)

[science_man_88]

Originally Posted by GP2

Yes, using the flag , 1) in the primecertexport command creates a Primo version 4 certificate. So it can be submitted to FactorDB, assuming that FactorDB has fixed the recent problem that prevents people from submitting certificates.

I have only used it for very small numbers. It is probably less efficient than Primo, and I don't think there's any way to interrupt and resume the function if it takes a very long time to run.

ctrl C exits ( at last check, can't do that on my mobile version)
but alarm exists for a reason ...
iferr could be used in a user function to catch it and return to it on user input maybe ... but probably not a premade function.

[GP2]

Originally Posted by science_man_88

ctrl C exits ( at last check, can't do that on my mobile version)
but alarm exists for a reason ...
iferr could be used in a user function to catch it and return to it on user input maybe ... but probably not a premade function.

Can it survive a reboot? It might need to if it runs for weeks. I'm only starting to learn Pari/GP.

Originally Posted by GP2

Yes, using the flag , 1) in the primecertexport command creates a Primo version 4 certificate.

Pari/GP can create a Primo certificate and print it with the primocertexport function, but there's no "primocertimport". So I wonder if it's possible to read in an existing certificate .out file created by Primo and run the primecertisvalid function on it? That would be an independent check on the validity of certificates generated by Primo.

[science_man_88]

Originally Posted by GP2

Can it survive a reboot? It might need to if it runs for weeks. I'm only starting to learn Pari/GP.



Pari/GP can create a Primo certificate and print it with the primocertexport function, but there's no "primocertimport". So I wonder if it's possible to read in an existing certificate .out file created by Primo and run the primecertisvalid function on it? That would be an independent check on the validity of certificates generated by Primo.

theoretically, all you need is read() and to write the results to file you can use write() both with filenames etc.

[enzocreti]

so (2^3510+183302)/3299454 is prime
and (2^3510+549908)/733212 is prime


both denominators 3299454 and 733212 are congruent to 3511 mod 7 where 3511 is the largest Wieferich prime

[Batalov]

Originally Posted by enzocreti

3511 is the largest Wieferich prime

Proof, please!