Mersenne numbers with smoothest P-1 factors:
Top 1,291 factors (top 100 per 10M range) listed here
Exponent Factor Bits min B1 min B2 Ratiok (factored)
M120,581,291557462078511319798439372.2445,778,903,114,73979,996,594,956.6122 × 5778903114739
M103,715,039237899146625661421883371.0181,433,610,478,04320,188,614,530.4123 × 1433610478043
M104,204,959309907162530957061103971.39131,143,852,112,75716,022,059,728.0213 × 1143852112757
M117,231,22956624431476301677406368.943805,024,849,31311,677,183,148.803 × 805024849313
M103,609,46938491554134169379531968.389206,392,301,2793,018,176,855.8132 × 206392301279
M321,797,123183598398036895594998676180.60967147,502,800,2091,829,995,352.8922 × 5 × 967 × 147502800209
M102,813,643613482773282021567767372.3819130,853,933,3591,807,936,308.5322 × 3 × 19 × 130853933359
M149,497,3331734205139576530130488173.8811131,820,924,0971,784,337,107.7323 × 5 × 11 × 131820924097
M101,343,799138194964641896499279370.233746,068,421,073655,991,187.5322 × 37 × 46068421073
M102,071,99354288286984541869372968.881618,467,455,267268,113,661.3124 × 32 × 18467455267
M121,668,931240475051883074463726371.0364715,274,115,083215,048,488.75647 × 15274115083
M107,964,349155944743675107899155170.402513,756,282,039195,397,501.053 × 52 × 7 × 13756282039
M100,999,18916834767929721484238337364381797.0919,47718,660,890,959192,207,216.5822 × 72 × 11699 × 19477 × 18660890959
M107,479,441167724167374742751561770.51167,740,690,761109,786,784.4124 × 32 × 7 × 7740690761
M112,721,317271597874610535224186715981.173,8513,487,581,42142,967,577.313 × 13 × 23 × 3851 × 3487581421
M102,171,961262313511276698552559171.151091,121,613,27115,763,670.813 × 5 × 7 × 109 × 1121613271
M104,056,09312346382127571430215366.7411642,052,0439,619,816.4222 × 3 × 7 × 11 × 642052043
M101,103,31945333255677381955252768.621,307571,774,3378,332,579.023 × 1307 × 571774337
M115,775,58160920628074156158139969.055,041521,916,1197,559,017.95712 × 521916119
M103,578,157114506713824198693535969.961,889325,130,9474,647,654.3632 × 1889 × 325130947
M111,006,9532682710448668582356753135984.475,261247,664,0172,931,910.323 × 19 × 1627 × 5261 × 247664017
M110,294,531205880008551067271200170.80125179,484,4632,535,009.1625 × 53 × 13 × 179484463
M101,567,15922168791769253438275967.59149143,615,8192,124,900.113 × 17 × 149 × 143615819
M104,137,27910257775903093017920966.481,063115,830,7131,742,462.9622 × 1063 × 115830713
M332,202,71917540416257583096039663177.2285982,728,4211,071,403.095 × 743 × 859 × 82728421
M333,069,2999598429581818151655756103386.3178,36791,878,0711,064,500.1222 × 5003 × 78367 × 91878071
M126,523,421894704279444702739864772.9223,78970,775,527970,566.133 × 7 × 23789 × 70775527
M102,461,46197012576270359280543969.7225,94360,826,951872,487.103 × 25943 × 60826951
M332,201,07120350530743894199484246377.431,583,65164,470,937832,641.433 × 1583651 × 64470937
M123,000,89333656291833396212227070311388.1217,49772,379,171821,361.1522 × 17 × 15887 × 17497 × 72379171
M332,291,837143542783990456912762730380.2538,28162,207,269775,190.15907 × 38281 × 62207269
M113,310,233204880489684344875851370.802,33353,821,307760,238.7123 × 32 × 2333 × 53821307
M332,231,411440202082882119231604133870391.83479,41965,638,457714,780.53210527 × 479419 × 65638457
M107,647,367213994318797068126371970.862,38347,943,037676,606.663 × 29 × 2383 × 47943037
M112,402,01350048738288376790498756178.73197,90951,132,947649,491.3522 × 5 × 11 × 197909 × 51132947
M107,999,5034721546324638900718455375.3231343,077,607571,915.1322 × 3 × 7 × 193 × 313 × 43077607
M332,307,6833804376983190105326495899984.984,44746,273,363544,547.1473 × 811 × 4447 × 46273363
M332,317,693206190984529975031139508180.775,57338,711,347479,277.2622 × 5 × 719 × 5573 × 38711347
M332,264,49715332269681406403050019823853901889113.561,059,06153,935,031474,938.5425 × 3 × 31 × 269 × 504563 × 1059061 × 53935031
M333,069,8873099911832635334453364003184.6818,04737,861,687447,112.605 × 53 × 257 × 18047 × 37861687
M129,303,679842899517324414981699972.844,22929,757,571408,556.657 × 37 × 4229 × 29757571
M332,229,727112438208298937778543210711389.86131,00936,090,451401,624.4522 × 131 × 683 × 131009 × 36090451
M127,999,8494051397738393594703454375.1022329,617,993394,376.333 × 72 × 163 × 223 × 29617993
M112,412,31728420046886857761397762533259397.84756,88138,331,763391,768.7723 × 13 × 43 × 9743 × 756881 × 38331763
M109,999,861145537941575371200665445780.271,03930,421,871379,005.2922 × 3 × 107 × 163 × 1039 × 30421871
M332,207,24315886655304042153695709012007197.0042,30736,424,879375,499.785 × 29 × 37 × 28921 × 42307 × 36424879
M332,310,5711199545160359146565994445575393.28933,55334,004,017364,550.8422 × 19 × 7481 × 933553 × 34004017
M122,999,3997340866512644790738964775.9615,93727,097,531356,741.88691 × 15937 × 27097531
M111,013,499580368052790990270853705782.261,126,97328,424,579345,531.9624 × 3 × 17 × 1126973 × 28424579
M332,220,63140317891123366751539728978.425,845,13925,952,929330,965.7022 × 5845139 × 25952929

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