is 2 1794587 - 1
has 540225 decimal digits
takes 0.097 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.557568.6567%500000150000000.10155.0567%16.659070.2416%1.5849%
PrimeNet2570.010763.1579%80001400000.00122.8159%0.011964.1953%1.0374%
GPU722610.171265.5738%80001300000.00121.4942%0.172366.0882%0.5144%
Difference+6+16.3864+3.0829%+492000+14870000+0.1003+3.5625%+16.4867+4.1535%+4.1535%

Known prime factors (2 factors, 112.0 bits, 0.00624349% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1794587274679486231134.6777653
3 × 2551
-325512.113e-91.116e-52.045e-5
17945871950113152113633176455192477.36854333201792769957
43 × 109 × 11592319563211
2018-12-211091159231956321122,95249,68292,792

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1794587535656078712938599487394521817033734112.045
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:35:00alpertronManual testing5000001500000012-
skipped known factor: 27467948623
--0.101--5.057%


Trial Factoring results:
No TF results for M1794587


ECM factoring results:

Old Calculation Method

Total ECM effort:18.263 GHz-days
Estimated T-Level:24.732
DigitsB1CurvesCompleteFacMiss
2011000265 / 1002.6506.972%
2550000265 / 2800.94638.747%

New Calculation Method

Total ECM effort:18.263 GHz-days
Estimated T-Level:24.732
DigitsB1CompleteFacMiss
20110008.5480.019%
25500000.77346.181%
302500000.04895.354%
3510000000.00299.782%


ECM Summary

B1B2factorcurvesGHz-days
50000500000026318.13
50000500000020.138


Lucas-Lehmer results:
No L-L results for M1794587


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T17:10:22Oliver KruseGTX-3
27467948623
FA539EBA610AC0__no
2017-11-05T21:46:14bayanneiMac1
27467948623
FA539EBA610AC0__no
2018-12-21T05:53:14ATHec2-PRPCF
27467948623
195011315211363317645519
822D56A9388B34A5no
2018-12-22T01:23:47kkmrkkblmbrbkc5.large
27467948623
195011315211363317645519
822D56A9388B34A5no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-01-01T10:30:09+00:00