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

Mersenne numbers with smoothest P-1 factors:

Top 2,351 factors (top 100 per 10M range) listed here

Exponent	Factor ↓	Bits	min B1	min B2	Ratio	k (factored)
M344,101,117	327159431287639319574914584833878554471	127.94	1,595,453	26,158,507	204,453.96	3 × 5 × 41 × 139 × 253681 × 525253 × 1595453 × 26158507
M143,793,077	1089891899505147606028095526102474849	119.71	75,083	123,077	1,028.10	2⁴ × 3³ × 929 × 5189 × 8167 × 24113 × 75083 × 123077
M136,999,147	14927499619906587058135555634367721	113.52	218,971	648,377	5,711.39	2² × 3⁸ × 5 × 30259 × 96643 × 218971 × 648377
M324,000,169	2107736488354350041793600141033289	110.70	529,237	934,723	8,443.80	2² × 3² × 53 × 17761 × 194027 × 529237 × 934723
M502,000,027	2107472748472812989445447752584121	110.70	113,777	1,099,081	9,928.54	2² × 5 × 3089 × 12569 × 21617 × 113777 × 1099081
M332,286,169	156394415748210686875406280597473	106.95	207,293	1,399,439	13,085.36	2⁴ × 17 × 45587 × 65423 × 207293 × 1399439
M291,715,117	98225640025976412553706760976457	106.28	561,347	5,877,763	55,306.66	2² × 61 × 6047 × 34583 × 561347 × 5877763
M332,326,249	72419576618184201512504753317681	105.84	68,791	116,447	1,100.26	2³ × 3 × 5 × 307 × 7673 × 48119 × 68791 × 116447
M577,777,777	14208317633332733265225951551519	103.49	578,483	5,385,269	52,038.37	37357 × 105653 × 578483 × 5385269
M332,332,597	11824502017310535973813596981521	103.22	207,079	400,381	3,878.85	2³ × 5 × 53 × 4021 × 25171 × 207079 × 400381
M332,250,199	8889604618507813689470278581551	102.81	198,083	2,167,093	21,078.63	5² × 7 × 4909 × 36277 × 198083 × 2167093
M143,665,259	7064116640624236958951093273591	102.48	41,231	245,653	2,397.12	5 × 7 × 19 × 23 × 7243 × 21911 × 41231 × 245653
M102,951,631	5912056549793723537624525215153	102.22	5,023	7,673	75.06	2³ × 3 × 47 × 67 × 151 × 193 × 409 × 827 × 5023 × 7673
M332,198,681	5414284231543658478199587186241	102.10	830,861	1,320,251	12,931.64	2⁵ × 3² × 5 × 1949 × 2647 × 830861 × 1320251
M247,000,007	1396083613249504874299947134257	100.14	307,301	1,733,267	17,308.57	2³ × 3² × 1559 × 47269 × 307301 × 1733267
M332,352,467	795974427811155985057435484609	99.33	99,223	176,051	1,772.41	2⁵ × 467 × 1733 × 2647 × 99223 × 176051
M335,429,231	721365617174754483306832930801	99.19	99,317	190,529	1,920.91	2³ × 3 × 5² × 149 × 563 × 1129 × 99317 × 190529
M333,070,643	686861025162610964565128659817	99.12	18,973	409,769	4,134.24	2² × 23 × 37 × 5521 × 7057 × 18973 × 409769
M71,559,431	206371038834469291300754739913	97.38	3,083	3,671	37.70	2² × 3³ × 19 × 79 × 311 × 1559 × 1621 × 3083 × 3671
M332,318,087	175751512327130344367894127047	97.15	83,177	255,361	2,628.54	331 × 5623 × 6689 × 83177 × 255361
M332,370,911	175533268118422464065507106097	97.15	2,297	55,249	568.71	2³ × 3⁵ × 11 × 29 × 101 × 139 × 239 × 2297 × 55249
M333,003,371	71918011466196173419983258847	95.86	601,763	944,899	9,857.04	3 × 11 × 13 × 19 × 23 × 1013 × 601763 × 944899
M343,628,321	53955048167252464797085802231	95.45	1,963,037	366,555,719	3,840,461.62	5 × 21821 × 1963037 × 366555719
M48,935,797	41955247477759784390973109921	95.08	2,053	2,113	22.22	2⁴ × 3 × 5 × 11² × 17 × 271 × 601 × 1229 × 2053 × 2113
M131,999,729	37486064393283043665593325689	94.92	323,951	3,592,777	37,850.44	2² × 23 × 61 × 21739 × 323951 × 3592777
M332,357,213	32548922735692585084112500759	94.72	8,849	44,071	465.29	3³ × 31 × 79 × 1277 × 1487 × 8849 × 44071
M159,000,043	32520811753975947388585873481	94.72	536,947	4,452,209	47,006.20	2² × 5 × 37 × 57809 × 536947 × 4452209
M332,320,987	28921440724574445729883578977	94.55	2,129	582,821	6,164.41	2⁴ × 31 × 67 × 71 × 89 × 167 × 2129 × 582821
M332,287,691	19305522637701948167601276281	93.96	18,191	27,109	288.51	2² × 5 × 769 × 953 × 4019 × 18191 × 27109
M414,000,127	17000407212943276068260591201	93.78	89,413	1,163,651	12,408.37	2⁴ × 5² × 7 × 11 × 43 × 149 × 89413 × 1163651
M332,297,347	16934350609413133760085103753	93.77	177,383	679,171	7,242.64	2² × 3 × 13 × 17 × 173 × 461 × 177383 × 679171
M332,332,829	12546733367967504111963804761	93.34	172,633	1,702,741	18,242.10	2² × 5 × 31 × 103577 × 172633 × 1702741
M396,507,047	9784561299118480614829267361	92.98	4,157	2,015,771	21,679.02	2⁴ × 5 × 7 × 13 × 257 × 787 × 4157 × 2015771
M111,009,461	9126770682139236502870116169	92.88	5,059	12,713	136.87	2² × 3³ × 7 × 13 × 17 × 787 × 4861 × 5059 × 12713
M332,201,269	6413122673044777553276854481	92.37	78,691	491,357	5,319.27	2³ × 5 × 13 × 23 × 20873 × 78691 × 491357
M332,196,671	3466064070766392947648319689	91.49	10,889	456,811	4,993.27	2² × 11 × 3449 × 6911 × 10889 × 456811
M80,778,769	3345980427151873778834308873	91.43	2,801	3,413	37.33	2² × 3² × 13 × 1439 × 1511 × 2129 × 2801 × 3413
M30,900,871	2557906714649419049023429177	91.05	1,301	1,609	17.67	2² × 3² × 43 × 107 × 311 × 463 × 829 × 1301 × 1609
M140,000,767	2075832461401694019987502201	90.75	64,553	90,397	996.16	2² × 3 × 5² × 557 × 7603 × 64553 × 90397
M164,800,901	1852543468455051019827268279	90.58	103,573	311,371	3,437.47	3² × 7 × 421 × 6571 × 103573 × 311371
M82,309,873	1595920733773458167520568009	90.37	2,417	3,739	41.38	2² × 3² × 29 × 71 × 179 × 233 × 347 × 2417 × 3739
M333,100,049	1539457783264690058667791833	90.31	3,821	192,047	2,126.43	2² × 3 × 17 × 97 × 233 × 683 × 3821 × 192047
M143,999,971	1456959509700595945839918863	90.24	55,817	57,793	640.47	43 × 1201 × 30367 × 55817 × 57793
M106,905,053	1420759794768450689119974751	90.20	1,091	1,619	17.95	3³ × 5³ × 7 × 197 × 859 × 941 × 1091 × 1619
M45,913,831	1309673971497300048703624441	90.08	593	643	7.14	2² × 3 × 5 × 11 × 397 × 499 × 523 × 547 × 593 × 643
M332,203,463	1273498000947111807187584767	90.04	18,731	66,083	733.92	113 × 3167 × 4327 × 18731 × 66083
M50,832,211	1130511221789426466026816711	89.87	1,831	2,383	26.52	5 × 17 × 19 × 131 × 163 × 263 × 281 × 1831 × 2383
M332,217,713	841098629146494309705542209	89.44	21,433	90,887	1,016.15	2⁵ × 3 × 11 × 17 × 53 × 683 × 21433 × 90887
M108,959,083	835621581461655034988867297	89.43	1,321	4,513	50.46	2⁴ × 7 × 19 × 463 × 647 × 1009 × 1321 × 4513
M64,118,731	825618871455538175289100751	89.42	2,237	2,819	31.53	5³ × 7 × 11 × 101 × 947 × 1109 × 2237 × 2819

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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	<	123M	PrimeNet wavefront