760590 762030 761516 762840 763176 764346 done.

758646 761880 763728 had been done by others.

I released 713214 at 121 digits with driver 2^6*127. At 122 digits it hit the down-driver, but didn't make it below 100 digits before losing it again. Recent evidence has shown that losing the down driver above 100 digits more likely than I would have expected if one gains it over 120 digits. The really sad part is that it takes a long time to get down only to be a dud.

757614 at 110 digits, stopped
762216 at 105 digits, stopped
762720 at 100 digits (down to 50 and back up again), stopped

releasing 760392: size 101, i354, 2[sup]3[/sup] * 3[sup]2[/sup] * 7[sup]2[/sup] * 7451 * 50321 * c89

(From about i97, it just did a dead run uphill...)

reserving 760542

764844 at 100 digits, having got down to 12 and then gone up again. 2*3 driver.

done with 755460
reserving 758172

edit: 758172 is already at 101 digits! so is 758460, 758562, and 758976

reserving 760200 instead

The mystery worker must be watching this thread: he/she/it doesn't seem to be working on any sequences anyone else has reserved. Can you come out of the dark please?

Sorry, I didn't notice that the entire 770k-780k range was reserved. Anyway, someone ran 768222 up to 103 digits overnight, n=1785, 2^3 x 5^2.

I just noticed that the number I'm running, 753732, had an iteration (866) that had only 2 and an 88 digit number (same size as composite) for factors. Is that of any interest to anyone but myself?

[code]
866. 9916162230667719863575235049237917670286181628737061325814830007741512112992620412854434 = 2 * 4958081115333859931787617524618958835143090814368530662907415003870756056496310206427217
[/code][FONT=verdana]


[/FONT]

[QUOTE=EdH;200896]I just noticed that the number I'm running, 753732, had an iteration (866) that had only 2 and an 88 digit number (same size as composite) for factors. Is that of any interest to anyone but myself?

[code]
866. 9916162230667719863575235049237917670286181628737061325814830007741512112992620412854434 = 2 * 4958081115333859931787617524618958835143090814368530662907415003870756056496310206427217
[/code][FONT=verdana]


[/FONT][/QUOTE]

That is common, and it is bad news when the prime is of the form 4n+1, because you lose the downdriver.

This mystery worker is getting a bit annoying. They obviously know someone else is working on this range because others are updating the DB. If by any chance you're reading this thread, please could you reply? I won't be cross with you or anything.

Done with 748080, 108 digits, 2*3
Done with 748244, 108 digits, 2^2*7
I am keeping 748350 at 119 digits, 2^3*7