GIMPS (Prime95) Mersenne numbers with smoothest P-1 factors

Mersenne numbers with smoothest P-1 factors:

Top 2,625 factors (top 100 per 10M range) listed here

Exponent ↓	Factor	Bits	min B1	min B2	Ratio	k (factored)
M940,216,091	3283382049964706665517567	81.44	269,393	6,481,528,541	79,585,125.16	269393 × 6481528541
M901,000,031	266276073654639633298220609	87.78	1,362,211	22,449,467	255,738.05	2⁵ × 151 × 1362211 × 22449467
M887,184,833	9661162819438172378751929	83.00	773	76,562,829,613	922,460,722.23	2² × 23 × 773 × 76562829613
M870,000,049	23255277668571434851475401	84.27	5,711	10,555,879	125,268.90	2² × 3 × 5² × 739 × 5711 × 10555879
M867,000,083	9614140770402207714362383	82.99	69,427	963,349	11,607.81	3² × 61 × 151 × 69427 × 963349
M840,859,433	15173015946721772325308641	83.65	787	1,327,871	15,874.19	2⁴ × 3³ × 5 × 7 × 571 × 787 × 1327871
M815,484,517	5615186632471611185210153	82.22	14,249	62,983	766.07	2² × 251 × 3821 × 14249 × 62983
M750,000,089	891430300672190603511376121	89.53	1,181	384,029	4,289.57	2² × 5 × 347 × 349 × 541 × 1181 × 384029
M736,647,071	19251950982339179681312159	83.99	15,803	3,918,891,953	46,657,248.74	211 × 15803 × 3918891953
M731,000,089	66210355415659597789235459949781217	115.67	2,075,197	49,780,219	430,354.41	2⁴ × 33623 × 814903 × 2075197 × 49780219
M726,064,763	10702385060027676180416983	83.15	146,407	314,003	3,776.52	3² × 47 × 379 × 146407 × 314003
M726,064,763	7170112396664438582504527	82.57	3,481	4,673,191	56,597.90	3 × 23 × 53 × 59² × 83 × 4673191
M701,000,023	8707567537669220450140247	82.85	502,919	1,764,219,997	21,294,520.23	7 × 502919 × 1764219997
M690,009,941	9146320541070118156543519	82.92	983	68,103,959,447	821,326,558.54	3² × 11 × 983 × 68103959447
M670,616,621	144162917643573353055915113	86.90	140,527	203,909	2,346.54	2² × 349 × 2687 × 140527 × 203909
M670,000,103	1557481211663066219448799	80.37	11	35,221,188,879,001	438,262,608,752.12	3 × 11 × 35221188879001
M666,666,829	86534383739130936327984761	86.16	20,231	61,651	715.53	2² × 5 × 11 × 17 × 13913 × 20231 × 61651
M663,021,377	12537419408967958548238079	83.37	13	727,289,429,170,939	8,723,169,891,776.58	13 × 727289429170939
M662,109,379	1228830502724805801823031	80.02	37,567	981,587	12,266.23	5 × 7 × 719 × 37567 × 981587
M662,103,769	2392582108122840025709017	80.98	1,523	1,142,003	14,101.44	2² × 3 × 7 × 83 × 149 × 1523 × 1142003
M662,100,059	1168737423198424683852551	79.95	335,383	4,576,721	57,243.91	5² × 23 × 335383 × 4576721
M640,402,457	252244080831943611399099691087	97.67	224,699	4,574,429	46,835.21	3 × 13 × 59 × 83269 × 224699 × 4574429
M601,246,421	6097528069126908900690382627129	102.27	820,609	62,098,489	607,224.77	2² × 3 × 47 × 176431 × 820609 × 62098489
M600,000,889	107654015281203513786125089	86.48	9,521	19,309	223.29	2⁴ × 3² × 11 × 239 × 1289 × 9521 × 19309
M600,000,017	4602345093762900361955249	81.93	1,039	4,568,472,481	55,761,602.89	2³ × 101 × 1039 × 4568472481
M577,777,777	14208317633332733265225951551519	103.49	578,483	5,385,269	52,038.37	37357 × 105653 × 578483 × 5385269
M563,021,377	4982501757616947169867879	82.04	105,253	14,013,184,573	170,802,626.38	3 × 105253 × 14013184573
M563,000,051	1682083539327735993247871	80.48	491	59,371,243	737,746.12	5 × 37 × 277 × 491 × 59371243
M551,112,571	16561303844751754320741713	83.78	30,071	1,458,169	17,405.57	2³ × 7 × 29 × 211 × 30071 × 1458169
M546,000,001	27988280829648105822204247	84.53	228,049	342,101	4,046.95	3² × 173 × 211 × 228049 × 342101
M539,171,293	939752472902235336213593	79.64	4	217,869,646,692,743	2,735,797,018,659.58	2² × 217869646692743
M528,000,017	139594677565217968539478537	86.85	121,531	670,693	7,722.31	2² × 3 × 7 × 43 × 449 × 121531 × 670693
M515,000,033	18079544351758001271557316041	93.87	306,853	848,779	9,042.23	2² × 5 × 31 × 71 × 1531 × 306853 × 848779
M511,257,787	681809936151480749315369	79.17	7,043	23,057	291.22	2² × 661 × 1553 × 7043 × 23057
M507,000,041	964421595869225659683961	79.67	3,259	374,153,639	4,696,056.32	2² × 3 × 5 × 13 × 3259 × 374153639
M502,000,027	2107472748472812989445447752584121	110.70	113,777	1,099,081	9,928.54	2² × 5 × 3089 × 12569 × 21617 × 113777 × 1099081
M501,000,551	557779688272939379351119	78.88	29	914,065,260,001	11,587,454,720.56	3 × 7 × 29 × 914065260001
M501,000,187	765000601334772261548759	79.34	1,867	1,873	23.61	31 × 61 × 263 × 439 × 1867 × 1873
M500,000,507	4519436256097633821431839	81.90	643	334,698,339,139	4,086,550,201.80	3 × 7 × 643 × 334698339139
M500,000,489	5218403378300324663262137	82.11	36,563	933,883	11,373.58	2² × 13 × 2939 × 36563 × 933883
M490,000,003	70426817562272964022712873527	95.83	1,126,513	45,898,729	478,959.36	3 × 463291 × 1126513 × 45898729
M487,001,663	193917699893549628252550385209	97.29	45,751	100,931	1,037.41	2² × 3² × 13⁴ × 19 × 2207 × 45751 × 100931
M483,000,041	1228712088688951865086782719	89.99	250,501	2,486,753	27,633.90	73 × 83 × 337 × 250501 × 2486753
M471,000,043	473821154201473868028287143	88.61	16,529	699,947	7,898.79	3² × 293 × 16487 × 16529 × 699947
M464,000,021	56208073342032516397974073	85.54	3,229	63,576,391	743,244.67	2² × 3 × 23 × 1069 × 3229 × 63576391
M461,000,027	546490818370905363609601	78.85	1,024	7,717,749,943	97,873,243.65	2¹⁰ × 3 × 5² × 7717749943
M435,964,951	488817615301852976069543	78.69	31	18,084,378,268,091	229,807,360,584.22	31 × 18084378268091
M423,000,089	7999281314567748179722151	82.73	9,221	73,375,433	886,967.88	5² × 13 × 43 × 9221 × 73375433
M419,491,001	558450877762856861912473	78.89	7	7,924,156,560,479	100,451,017,982.39	2² × 3 × 7 × 7924156560479
M414,000,127	17000407212943276068260591201	93.78	89,413	1,163,651	12,408.37	2⁴ × 5² × 7 × 11 × 43 × 149 × 89413 × 1163651

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0M	<	10¹⁰	All tracked exponents
0M	<	2³²	GPU TF range
0M	<	1000M	PrimeNet range
0M	<	193M	low-PrimeNet, low-res
0M	<	385M	low-PrimeNet, high-res
50M	<	146M	PrimeNet wavefront