46^142+1 is done: [code]
p62 factor: 11893611090293928727352499631974784464528012636199758175424273
p69 factor: 107641774730564435386456344516797800828597284137299947167515640335553
p91 factor: 1668758942628773363279869335528556269690511956235331657831487792455294976418032604799228417
[/code]
They are taking more than a week each, so I'll leave the Brent tables alone for a while. Or start passing them to NFS@Home.

@jcrombie, did Richard Brent say how much ECM has been run against unfactored composites? None of the ones I've factored look like ECM misses, but that doesn't prove anything about other numbers.

Chris

Hi Chris,

The only info I've got on how much ecm effort has been done is [URL="http://maths-people.anu.edu.au/~brent/pub/pub200.html"]here[/URL]. It states "We would be surprised if many factors of less than 25 digits are still to be found."

The ecmnet project was working on these numbers, but I don't know how much they did.

Cheers.

Reserving:
58^134+1

Chris

The last one is into LA so reserving:
47^142+1

Chris

47^142+1 is done: [code]
p92 factor: 26799628973882022021240743956986987669050738068751682886689144382474405124647296261917743957
p94 factor: 5584998559301348508689128801191907531715329634060696018098221856822247794097292392770288621861
[/code]
And reserving:
(54^137-1)/53

Chris

(54^137-1)/53 is done: [code]
p63 factor: 138353985064500362466079498335498157268396360855863254811852801
p174 factor: 296946050479656599501674186465697012955682334008534498605430290099524090650427729841350990994986805225287188734474829717891031722852419626393961080486487906333743177523555811
[/code]
And reserving:
54^137+1

Chris

54^137+1 is done: [code]
p50 factor: 98963728379775985410441175268594020073152392480587
p139 factor: 1174412608898506589225012689339921629107477510104963586814227095341157631690251556416191079772378763427202064579084771975712697417714779613
[/code]
And reserving:
13^214+1

Chris

13^214+1 is done: [code]
p63 factor: 802613681098842683578733029560442634624676055698002425620291961
p69 factor: 149193988166389766470615356539799076072712267621082921891755718516793
p70 factor: 1427435475856914818544458415340642448855416597543901294316482822199809
[/code]
And reserving:
59^134+1

Chris

59^134+1 is done: [code]
p70 factor: 2917202049754685347613396130303455534082089915257622155665965759461937
p133 factor: 8519412839586767614612348197465574355469296324090282734543577595098321327994092441286297291769470095188098707571319432657554134236189
[/code]
And reserving:
87^122+1

Chris

87^122+1 is done: [code]
p57 factor: 169132555699255707558955683550758864303950165780047384021
p173 factor: 13122551349985729184956273864790159255970013748816952866897079726886601009745051262301109206979227379873689269449947526791918860465642180789838518884636246105000439188419269
[/code]
And reserving:
55^137-1

Chris

55^137-1 is done: [code]
p79 factor: 5304562039692280984305348181019944162036034649851036817999008679569813554407979
p104 factor: 16952909939922831554871137993004617819624411534480986299032131321982525209566527983763088847851264564661
[/code]
And reserving:
74^127+1

Chris