User TJAOI has done TF for all exponents in GIMPS range (<1G) up to 2^67
Mersenne numbers trial factoring (TF) effort gaps (missed bit levels):
2,181,816 exponents like this known
Exponent range: M to M
TF range: to
GHz-days effort: to Show TF assignments starting from 1 if B1 <=
(only for exponent >1M)

Results limited to 1000 exponents
ExponentGapGHd
M335956955-678.8
M3472013674.3
M3472169674.3
M3472291674.3
M3472319674.3
M3472363674.3
M3472457674.3
M3472531674.3
M3472757674.3
M3472871674.3
M3472883674.3
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M347293356-652.1
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M3473251674.3
M3473273674.3
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M3473363674.3
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M3473501674.3
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M347379156-65,676.4
M3473801674.3
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M352248763-678.3
M352255962-678.3
M352276755-57,59-678.4
M352318762-678.3
M352331357-62,64-678.2
M3523357674.2
M352338164-678.0
M352357965-677.4
M3523603674.2
M352365164-663.7
M352371163-678.3
M352390362-678.3
M352411966-676.4
M352416166-676.4
M352423963-64,66-677.2
M352431759-678.4
M352450363-678.3
M352460362-678.3
M352473763-678.3
M352489166-676.4
M352492959-678.4
M352501758-678.4
M352522963-678.3
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M352596165-677.4
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M352795762-678.3
M352824160-678.4
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M353653960-63,65-677.8
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M353679162,64-678.0
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M353711360-678.4
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M353742761-63,65-677.8
M353748762-678.3
M353755160-678.4
M353770162-678.3
M353771959-678.4
M353774965-677.4
M353795958-678.4
M353797957-678.4
M353820166-676.3
M353821959-678.4
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M353839165-677.4
M353851766-676.3
M353853158-678.4
M353854763-678.2
M353864964-677.9
M353869961-678.4
M353881361-678.4
M353889157-678.4
M353911762-678.3
M353929961-678.4
M353960363-65,676.1
M353975962-678.3
M353976164-677.9
M353986957-678.4
M354004158-678.4
M354012761-678.4
M354024766-676.3
M354026366-676.3
M354037764-677.9
M354040161-678.3
M354042164-677.9
M354045166-676.3
M354061960-678.4
GHz-days total:5,662