Found a factor? Post it here. Or forever fold your crease. - Page 98

Dubslow · 2015-12-04, 23:39

Nice find

Jwb52z · 2015-12-14, 19:44

P-1 found a factor in stage #1, B1=640000.
UID: Jwb52z/Clay, M74822911 has a factor: 246259810267427297611010947961 (P-1, B1=640000)

97.636 bits.

VictordeHolland · 2015-12-14, 21:20

Every time I see a new post here I'm hoping it is a factor of M1277 or M1619, even tough I know it is very unlikely

alpertron · 2015-12-17, 02:21

Quote:

Originally Posted by Jwb52z

P-1 found a factor in stage #2, B1=645000, B2=12255000.
UID: Jwb52z/Clay, M75143573 has a factor: 2223935088334736540260164531842793066322489490183317406066993 (P-1, B1=645000, B2=12255000)

It's a composite factor according to Prime95, but the results file doesn't save the 2 parts that this factor becomes, so I don't know how to post them to this message.

You can see both prime factors at: http://www.mersenne.org/report_expon...143573&exp_hi=

Jwb52z · 2015-12-18, 01:24

P-1 found a factor in stage #2, B1=635000, B2=11906250.
UID: Jwb52z/Clay, M74476733 has a factor: 336605492262437911582967 (P-1, B1=635000, B2=11906250)

78.115 bits.

firejuggler · 2015-12-18, 11:21

[Fri Dec 18 10:17:33 2015]
P-1 found a factor in stage #2, B1=885000, B2=23231250, E=6.
UID: firejuggler, M79022257 has a factor: 229423566425068458592273046541231647814785995393 (P-1, B1=885000, B2=23231250, E=6), (157 bits)

it is composite of course,229423566425068458592273046541231647814785995393 =38679971773795566333239 (75 bits) * 5931327141776652671572487 (82.3 bits)

Gordon · 2016-01-25, 23:17

It has a 91 bit factor

[Sun Jan 24 08:10:30 2016]
ECM found a factor in curve #112, stage #2
Sigma=8829084939581650, B1=250000, B2=30000000.
M201667 has a factor: 2073051546873901675394238319 (ECM curve 112, B1=250000, B2=30000000)

christian_ · 2016-02-09, 18:09

M137395267 has a factor: 299720439373335925337 [TF:68:69:mfaktc 0.21 barrett76_mul32_gs]
found 1 factor for M137395267 from 2^68 to 2^69 [mfaktc 0.21 barrett76_mul32_gs]
my first find! 68 bits

M78914653 has a factor: 3946892419366218369503 [TF:71:72:mfaktc 0.21 barrett76_mul32_gs]
found 1 factor for M137395267 from 2^71 to 2^72 [mfaktc 0.21 barrett76_mul32_gs]

LaurV · 2016-02-10, 05:23

Quote:

Originally Posted by christianpoland

my first find! 68 bits

Welcome to the club. We understand your enthusiasm, and we like it

, but first, you don't need to post every (small) factor you find, and second, technically, that number has 69 bits

Again, welcome to the fray!

Gordon · 2016-02-17, 11:24

Not mine unfortunately, I logged in factoring results for numbers in the 140k range and got a result not needed for the above, this is the reason why

2016-02-15 kadir emir Factor: 12663133710644208611823239476283651826271

133 bits....

Jwb52z · 2016-02-21, 20:58

P-1 found a factor in stage #2, B1=645000, B2=12416250.
UID: Jwb52z/Clay, M77321767 has a factor: 63410308039841666453639 (P-1, B1=645000, B2=12416250)

75.747 bits.

2016-01-25, 23:17	#1074
Gordon Nov 2008 775₈ Posts	201667 - factored It has a 91 bit factor [Sun Jan 24 08:10:30 2016] ECM found a factor in curve #112, stage #2 Sigma=8829084939581650, B1=250000, B2=30000000. M201667 has a factor: 2073051546873901675394238319 (ECM curve 112, B1=250000, B2=30000000)

2016-02-09, 18:09	#1075
christian_ Jan 2016 Mighty Black Stump 17 Posts	M137395267 has a factor: 299720439373335925337 [TF:68:69:mfaktc 0.21 barrett76_mul32_gs] found 1 factor for M137395267 from 2^68 to 2^69 [mfaktc 0.21 barrett76_mul32_gs] my first find! 68 bits M78914653 has a factor: 3946892419366218369503 [TF:71:72:mfaktc 0.21 barrett76_mul32_gs] found 1 factor for M137395267 from 2^71 to 2^72 [mfaktc 0.21 barrett76_mul32_gs] Last fiddled with by christian_ on 2016-02-09 at 18:20

2016-02-17, 11:24	#1077
Gordon Nov 2008 1FD₁₆ Posts	M146059 Not mine unfortunately, I logged in factoring results for numbers in the 140k range and got a result not needed for the above, this is the reason why 2016-02-15 kadir emir Factor: 12663133710644208611823239476283651826271 133 bits....

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2015-12-04, 23:39	#1068
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3·29·83 Posts	Nice find

2015-12-14, 19:44	#1069
Jwb52z Sep 2002 1101011111₂ Posts	P-1 found a factor in stage #1, B1=640000. UID: Jwb52z/Clay, M74822911 has a factor: 246259810267427297611010947961 (P-1, B1=640000) 97.636 bits.

2015-12-14, 21:20	#1070
VictordeHolland "Victor de Hollander" Aug 2011 the Netherlands 3²·131 Posts	Every time I see a new post here I'm hoping it is a factor of M1277 or M1619, even tough I know it is very unlikely

2015-12-18, 01:24	#1072
Jwb52z Sep 2002 1537₈ Posts	P-1 found a factor in stage #2, B1=635000, B2=11906250. UID: Jwb52z/Clay, M74476733 has a factor: 336605492262437911582967 (P-1, B1=635000, B2=11906250) 78.115 bits.

2015-12-18, 11:21	#1073
firejuggler "Vincent" Apr 2010 Over the rainbow 2³·5·73 Posts	[Fri Dec 18 10:17:33 2015] P-1 found a factor in stage #2, B1=885000, B2=23231250, E=6. UID: firejuggler, M79022257 has a factor: 229423566425068458592273046541231647814785995393 (P-1, B1=885000, B2=23231250, E=6), (157 bits) it is composite of course,229423566425068458592273046541231647814785995393 =38679971773795566333239 (75 bits) * 5931327141776652671572487 (82.3 bits)

2016-02-21, 20:58	#1078
Jwb52z Sep 2002 35F₁₆ Posts	P-1 found a factor in stage #2, B1=645000, B2=12416250. UID: Jwb52z/Clay, M77321767 has a factor: 63410308039841666453639 (P-1, B1=645000, B2=12416250) 75.747 bits.