I have been busy lately.
no factor for M3321928381 from 2^81 to 2^82 [mfaktc 0.17-Win barrett92_mul32]
no factor for M3321928417 from 2^81 to 2^82 [mfaktc 0.17-Win barrett92_mul32]
I hope to finish the 2 remaining before the 17. Otherwise, it will have to wait till the 28 at least.

That firejuggler isn't finding factors eeither makes me feel better. At least we are together.
no factor for M3321934801 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32]
no factor for M3321934801 from 2^79 to 2^80 [mfaktc 0.17 barrett92_mul32]

M3321935797 has 0 factors in [2^71, 2^72-1].

Luigi

no factor for M3321928483 from 2^81 to 2^82 [mfaktc 0.17-Win barrett92_mul32]

I think i won't be able to finish my last assignement before i get on trip, will post the save file in 30H

M3321935891 has no factor in [2^71, 2^72-1].

Time to celebrate! Got one! (And a new refrigerator, too...but I paid $$ for that!)
no factor for M3321934831 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32]
no factor for M3321934831 from 2^79 to 2^80 [mfaktc 0.17 barrett92_mul32]
M3321934199 has a factor: 308387132301983065210409
found 1 factor(s) for M3321934199 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32]

Congrats! I think that's the biggest factor found for OBD.

[QUOTE=lavalamp;263889]Congrats! I think that's the biggest factor found for OBD.[/QUOTE]

Actually Oliver's factor 670475084138875461500081 for 3321928219 is bit "bigger" (same number of digits).

Ah, I didn't realise/remember another (prime) factor this large had been found.

[QUOTE=Christenson;263882]Time to celebrate! Got one! (And a new refrigerator, too...but I paid $$ for that!)
no factor for M3321934831 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32]
no factor for M3321934831 from 2^79 to 2^80 [mfaktc 0.17 barrett92_mul32]
M3321934199 has a factor: 308387132301983065210409
found 1 factor(s) for M3321934199 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32][/QUOTE]

Nice find! :smile: I suppose you are releasing the exponent at 79 bits.

Luigi

[QUOTE=ET_;263902]Nice find! :smile: I suppose you are releasing the exponent at 79 bits.

Luigi[/QUOTE]
Yep....not factoring from 79 to 80 bits, not this week, so it's unreserved. The GPU is doing standard 50M ranges for the next 24 hours or so, then back to OBD....

If I want to find bigger factors, I need to factor to higher bit ranges....might happen this week as I had a major success with one of my robotics students this week...got a 5 volt maximum digital pot circuit working in a n unknown RC car transmitter circuit with 5.2 and 7 volts on the terminals by cleverly adding resistors and capacitors in the right places....