is 2 188779 - 1
has 56829 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actualunknown10000000020000000001.360749.4637%1.360749.4637%-5.5363%
PrimeNet2400.000055.0000%2000450000.000012.1196%0.000060.4538%5.4538%
GPU722440.000059.0909%3400700000.00008.4443%0.000162.5454%3.4545%
Difference-440.0000-59.0909%+99996600+1999930000+1.3607+41.0193%+1.3607-13.0817%-13.0817%

Known prime factors (2 factors, 164.1 bits, 0.08693649% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18877957388817825.774152
23 × 19
-8192.446e-115.750e-81.089e-7
18877944214177471851434458127640017238540508520742138.3441171056565397937123783038368071621857
688223 × 11977193 × 13139741 × 25435589 × 425074487
2017-07-19254355894250744879.198e+110.31560.3461

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1887792537399339737604623304981295591179446590581393011950164.118
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-07-19T03:16:29kkmrkkblmbrbkManual testing10000000020000000001242138.3441.3610.0022.72141.940%


Trial Factoring results:
Exponent "188779" not found


ECM factoring results:

Old Calculation Method

Total ECM effort:11.561 GHz-days
Estimated T-Level:28.258
DigitsB1CurvesCompleteFacMiss
2011000698 / 1006.9800.090%
2550000698 / 2802.4938.231%
30250000417 / 6400.65252.097%

New Calculation Method

Total ECM effort:11.561 GHz-days
Estimated T-Level:28.258
DigitsB1CompleteFacMiss
201100043.8150.000%
25500005.8510.288%
302500000.59455.233%
3510000000.04895.360%
4030000000.00399.689%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002811.369
250000250000004109.99
2500003850000070.201


Lucas-Lehmer results:
Exponent "188779" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T01:21:22Oliver KruseOllaptop
57388817
442141774718514344581276400172385405085207
55BCFF029815721Eno
2017-09-22T10:01:47Oliver KruseManual testing
57388817
442141774718514344581276400172385405085207
55BCFF029815721Eno
2017-09-22T10:02:15Oliver KruseManual testing
57388817
442141774718514344581276400172385405085207
55BCFF029815721Eno
2017-11-06T15:57:11kkmrkkblmbrbkc4.xlarge
57388817
442141774718514344581276400172385405085207
55BCFF02981572__no
2020-04-17T18:59:10Oliver KruseAddPrpType5
57388817
442141774718514344581276400172385405085207
A10C9C3495E0DC__no


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-07-17T19:56:31+00:00