is 2 198613 - 1
has 59789 decimal digits
takes 0.001 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
Actualunknown10000000020000000001.360749.5475%1.360749.5475%49.5475%
PrimeNet2400.000055.0000%2200500000.000012.6310%0.000060.6839%5.6839%
GPU722440.000059.0909%3600800000.00018.8552%0.000162.7135%3.6226%
Difference-440.0000-59.0909%+99996400+1999920000+1.3607+40.6924%+1.3607-13.1659%-13.1659%

Known prime factors (2 factors, 121.9 bits, 0.06137559% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
19861336544793825.12392
22 × 23
-4232.295e-113.367e-85.443e-8
1986131357382354727010341958519821613096.777341715384875866721201160
23 × 3 × 5 × 7 × 523 × 777827972493550763
2020-06-175237778279724935507631.102e+11283,345,445529,210,386

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
198613496052571753511644557333214671343767337121.900
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-09-30T02:16:21kkmrkkblmbrbkManual testing100000000200000000012-
skipped known factor: 36544793
--1.361--42.031%


Trial Factoring results:
No TF results for M198613


ECM factoring results:

Old Calculation Method

Total ECM effort:12.375 GHz-days
Estimated T-Level:28.523
DigitsB1CurvesCompleteFacMiss
2011000732 / 1007.3200.064%
2550000732 / 2802.6147.288%
30250000451 / 6400.70549.399%

New Calculation Method

Total ECM effort:12.375 GHz-days
Estimated T-Level:28.523
DigitsB1CompleteFacMiss
201100046.6480.000%
25500006.2530.192%
302500000.63752.892%
3510000000.05195.018%
4030000000.00399.665%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002811.371
250000250000003067.466
250000250000001453.538


Lucas-Lehmer results:
No L-L results for M198613


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T02:09:27Oliver KruseDoppelherz
36544793
0EC4ECD511DF3E__no
2017-09-22T10:02:23Oliver KruseManual testing
36544793
0EC4ECD511DF3E__no
2017-09-22T10:02:36Oliver KruseManual testing
36544793
0EC4ECD511DF3E__no
2017-11-06T16:11:29kkmrkkblmbrbkc4.xlarge
36544793
0EC4ECD511DF3E__no
2020-04-17T19:08:04Oliver KruseAddPrpType5
36544793
9A988AAA0BFE40__no
2020-06-17T00:59:45CrypticCluecruncher
36544793
135738235472701034195851982161
9A988AAA0BFE40CDno


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: 2020-06-17T22:27:28+00:00