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Top Mersenne exponents with the most known factors:
Exponent range: M - M, number of factors between and

Known
Factors
Exponent
Count
113
106
938
8236
71,623
612,893
583,493
4457,098
Exponent # Known FactorsSum Bitsize of Known Factors Largest factor (bits) % Known PrimeNetGPU72actual
M7,508,98111495.9480.000.0066046378%263 266
M9,100,91911521.5180.160.0057302455%264 267
M3,930,621,65911591.0682.340.0000150374%288 291287

M566,448,35910450.6864.230.0000795615%279 282
M1,708,426,29710503.6972.860.0000294827%284 287280
M2,612,650,69310542.9879.880.0000207828%286 289281
M2,621,856,54110516.4078.960.0000196960%286 289283
M2,680,080,50310493.9672.070.0000184309%286 289285
M3,273,488,57310508.3878.040.0000155302%287 290284

M111,2699445.0379.650.3999613549%240 243
M457,7399445.7286.890.0973751417%240 243
M757,6519506.5583.830.0668572997%240 243
M794,2039430.5888.320.0542152321%240 243
M1,938,3179444.6483.790.0229392303%258 261
M5,977,7539404.7760.800.0067713236%262 265
M9,325,1599431.0872.400.0046227201%264 267
M27,366,9619414.3078.450.0015138692%266 269
M28,035,7019409.7760.860.0014615900%266 269
M31,866,3779429.3761.160.0013473920%267 270
M60,593,0419417.8065.270.0006895231%269 272
M110,393,0699423.0467.630.0003832143%272 275
M113,644,6739392.8863.840.0003457047%272 275
M458,703,4379426.0367.500.0000928772%278 281
M630,486,7999388.0556.110.0000615472%280 283
M639,698,2439422.9671.430.0000661191%280 283
M726,064,7639471.7174.850.0000649686%280 283
M736,098,4319444.1476.850.0000603369%280 283
M736,647,0719463.9572.470.0000629816%280 283
M809,682,1219451.7869.390.0000557968%281 284
M940,572,4919430.1067.950.0000457275%281 284
M1,253,228,9479479.5670.470.0000382661%283 286279
M1,512,382,4939430.7772.940.0000284829%284 287279
M1,541,784,5579423.3173.290.0000274556%284 287279
M1,689,848,5619435.7977.880.0000257884%284 287279
M1,702,917,1039459.9072.900.0000270068%284 287281
M1,797,253,0799447.7271.660.0000249115%284 287281
M1,956,651,0179447.4066.250.0000228655%285 288281
M2,444,875,8839472.3879.570.0000193211%286 289280
M2,568,758,3219408.9470.400.0000159197%286 289283
M2,578,897,0019462.2677.170.0000179246%286 289279
M2,622,903,6839480.2873.430.0000183110%286 289278
M2,698,453,8739425.9973.030.0000157863%286 289280
M2,877,506,7119434.6477.840.0000151046%286 289279
M3,250,525,1219444.8075.890.0000136841%287 290281
M3,278,329,2119489.5475.160.0000149326%287 290279
M3,356,318,9399445.7179.660.0000132798%287 290280
M4,057,374,6919416.4660.430.0000102644%288 291284

M3978294.6299.9674.2115869018%240 243
M2,6578384.49136.0514.4707188559%240 243
M3,7678423.82151.5611.2507300239%240 243
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