is 2 1352107 - 1
has 407025 decimal digits
takes 0.052 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8350597A94AB4BC0double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26721.976068.6567 %42580861631380920.71508.8790 %22.691071.4397 %
Target2600.113665.0000 %55002000000.00090.9820 %0.114565.3437 %
Difference+7+21.8624+3.6567 %+4252586+162938092+0.7141+7.8970%+22.5765+6.0960 %

Known prime factors (1 factor, 68.0 bits, 0.00502661% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
13521072881089845045405426412167.965106540748810760
23 × 3 × 5 × 11 × 80712688493
2015-12-03118071268849321.976243.45454.70

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-04-07Jossv4_computers15000123750--0.0011.938%
2014-04-28ANONYMOUSManual testing175000175000--0.0112.827%
2014-07-25mikrMSI425808616313809212--0.71514.773%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-04ANONYMOUSv4_computers212570.014
2003-06-30ANONYMOUSv4_computers212580.028
2022-03-07LordJuliusManual testing258260
2009-02-20Sturle Sundegibus.ifi2602610.114
2012-08-21Grant McCrackenhome2612620.227
2013-01-14dbaughManual testing2622630.726
2015-04-14snme2pm1Manual testing2632641.452
2015-04-14snme2pm1Manual testing2642652.763
2015-09-18ramgeisManual testing2652665.527


ECM factoring results:
Total ECM effort:29.089 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025013.29
50000500000010.047
250000350000005015.76


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-09-22ANONYMOUSv4_computers8350597A94AB4BC00.052


PRP results:
dateuseridcompidcofactorsres64
2017-09-30Oliver KruseGTX-0
288108984504540542641
1B34EBB4467DF406
2017-10-24kkmrkkblmbrbkc4.xlarge
288108984504540542641
1B34EBB4467DF406


CERT results:
No CERT results for M1352107


P-1 factor-bounds graph:
B1 = 4258086, B2 = 163138092 (P-1 stage 2)
B1 = 4258086 (P-1 stage 1)
B1 = 175000 (P-1 stage 1)
B1 = 15000, B2 = 123750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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264
263
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257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
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Last modified: 2024-02-09T03:30:02+00:00