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-   -   Found a factor? Post it here. Or forever fold your crease. (https://www.mersenneforum.org/showthread.php?t=13977)

 firejuggler 2023-05-21 05:43

[M]M117988147[/M] has a 97.337-bit (30-digit) factor: [url=https://www.mersenne.ca/M117988147]200159313635649323785855127351[/url] (P-1,B1=590000,B2=37800180)
k = 5^2 * 29 * 47 * 41659 * 211199 * 2829247

 Jwb52z 2023-05-27 14:08

P-1 found a factor in stage #2, B1=531000, B2=18827100.
UID: Jwb52z/Clay, M118113971 has a factor: 231859805660120170622397673 (P-1, B1=531000, B2=18827100)

87.583 bits.

 James Heinrich 2023-06-07 13:17

Nice run of 4 factors in 4 hours:[code]F-PM1 2023-06-06 16:56:33 Factor: 32205731417282669276783 / (P-1, B1=917000, B2=1146129600)
F-ECM 2023-06-06 15:46:48 Factor: 81045079853789731950377 / (ECM curve 7, B1=50000, B2=14701050)
F-PM1 2023-06-06 14:43:41 Factor: 10040520698580023167937879 / (P-1, B1=917000, B2=1146129600)
F-PM1 2023-06-06 12:33:08 Factor: 1890099135766276888280617 / (P-1, B1=917000, B2=1146129600)
F-PM1 2023-06-06 02:29:22 Factor: 235490649518693465101340517023 / (P-1, B1=851000, B2=1374757230)[/code]

 Jwb52z 2023-06-13 22:08

P-1 found a factor in stage #2, B1=532000, B2=18843900.
UID: Jwb52z/Clay, M118224871 has a factor: 152918941807628300330759 (P-1, B1=532000, B2=18843900)

77.017 bits.

 Jwb52z 2023-06-20 06:00

P-1 found a factor in stage #1, B1=532000
UID: Jwb52z/Clay, M118268023 has a factor: 2709638538660790265460769 (P-1, B1=532000)

81.164 bits.

 mrk74 2023-06-20 22:36

TF factor found M130185659 Factor: 55408623275049312531001

 James Heinrich 2023-06-24 17:13

[M]M21055501[/M] has a 136.285-bit (42-digit) factor: [url=https://www.mersenne.ca/M21055501]106143471399500675247500276849125506473401[/url] (P-1,B1=937000,B2=1146129600)
k = 2[sup]2[/sup] * 3[sup]3[/sup] * 5[sup]2[/sup] * 7 * 13 * 17 * 23 * 383 * 1033 * 2251 * 39761 * 461323 * 1606123

My biggest P-1 factor [URL="https://www.mersenne.ca/userfactors/pm1/17418"]ever[/URL]!
Still only #160 on the all-time [URL="https://www.mersenne.ca/userfactors/pm1/1/bits"]list[/URL] :sad:

 Jwb52z 2023-06-24 21:23

P-1 found a factor in stage #2, B1=505000, B2=17124750.
UID: Jwb52z/Clay, M118322969 has a factor: 390860828826208981676260490902624247 (P-1, B1=505000, B2=17124750)

118.234 bits!!!!!!!!!!!!!!

 Jwb52z 2023-07-02 05:09

P-1 found a factor in stage #2, B1=533000, B2=18869100.
UID: Jwb52z/Clay, M118374563 has a factor: 156195074377587653064583 (P-1, B1=533000, B2=18869100)

77.048 bits.

 storm5510 2023-07-03 13:36

M11810311 has a factor: 3809097401915127453173206120524887921442462693439778167.

(P-1, B1=657000, B2=304031910)

181.314 bits. 55 digits is a new record for me. :grin:

 kruoli 2023-07-03 13:40

Unfortunately it is a composite factor. :no:

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