is 2 3152189 - 1
has 948904 decimal digits
takes 0.268 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
Actual26937.874368.1159%10000001199121000.92296.8712%38.797270.3068%2.1908%
PrimeNet2600.048763.3333%130002400000.00312.6502%0.051964.3051%0.9717%
GPU722641.129265.6250%150002400000.00341.5444%1.132566.1559%0.5309%
Difference+5+36.7451+2.4909%+985000+119672100+0.9196+5.3268%+37.6647+4.1509%+4.1509%

Known prime factors (2 factors, 98.1 bits, 0.00311166% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
315218914626156971030.446232
23 × 29
-8294.766e-111.128e-62.009e-6
31521892298914579376958149832167.64036465367073119
31 × 1176302163649
2021-04-1931117630216364918.0867,909.214,772

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
31521893362428549858891470053435881513098.085
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-01-04T08:51:21Jocelyn LaroucheManual testing315218315218-
skipped known factor: 1462615697
--0.039--1.383%
2021-01-04T13:51:17Jocelyn LaroucheManual testing31521831521896-
skipped known factor: 1462615697
--0.058--3.003%
2022-02-12T07:46:36Jocelyn LaroucheManual testing1000000119912100-
skipped known factor: 1462615697
--0.923--6.871%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2021-01-04T08:51:24Jocelyn LaroucheManual testing259260--0.024--
2021-01-04T09:13:18Jocelyn LaroucheManual testing260261--0.049--
2021-01-04T15:32:55Jocelyn LaroucheManual testing261262--0.097--
2021-01-05T11:55:20Jocelyn LaroucheManual testing262263--0.311--
2021-01-06T20:01:32Jocelyn LaroucheManual testing263264--0.623--
2021-01-09T20:29:15Jocelyn LaroucheManual testing264265--1.185--
2022-03-24T17:59:09LordJuliusManual testing265266--2.371--
2022-03-24T17:59:09LordJuliusManual testing266267--4.741--
2021-04-19T19:07:18Jocelyn LaroucheManual testing26726867.640218.6600.54517.58
2021-12-06T01:55:29Jocelyn LaroucheManual testing268269--18.97--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.351 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.351 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.351


Lucas-Lehmer results:
No L-L results for M3152189


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-30T22:59:13Oliver KruseGTX-0
1462615697
EBFBAC28EA9DA2__no
2017-12-12T14:21:37kkmrkkblmbrbkc4.xlarge
1462615697
EBFBAC28EA9DA2__no
2021-04-20T13:31:03marssystemssystem11
1462615697
229891457937695814983
EBFBAC28EA9DA208no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 119912100 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 315218, B2 = 3152189 (P-1 stage 2)
B1 = 315218 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-24T17:59:09+00:00