is 2 260549 - 1
has 78434 decimal digits
takes 0.002 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
Actualunknown30000000100358126969105,417.947373.0612%5,417.947373.0612%73.0612%
PrimeNet2400.000055.0000%2800700000.000114.4070%0.000161.4832%6.4832%
GPU722440.000059.0909%50001200000.000110.5553%0.000163.4090%4.3181%
Difference-440.0000-59.0909%+29995000+10035812576910+5,417.9472+62.5058%+5,417.9472+9.6522%+9.6522%

Known prime factors (1 factor, 29.0 bits, 0.01113926% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
260549545589607929.0231047
3 × 349
-33493.367e-102.165e-73.477e-7

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-09-13T06:47:15Oliver KruseOllaptop30000000300000000024-
skipped known factor: 545589607
--1.901--44.102%
2022-05-03T00:16:14Oliver KruseThreadripper-PC3000000010035812696910-
skipped known factor: 545589607
--5,418--63.208%


Trial Factoring results:
No TF results for M260549


ECM factoring results:

Old Calculation Method

Total ECM effort:10.776 GHz-days
Estimated T-Level:26.844
DigitsB1CurvesCompleteFacMiss
2011000517 / 1005.1700.554%
2550000517 / 2801.84615.728%
30250000236 / 6400.36969.140%

New Calculation Method

Total ECM effort:10.776 GHz-days
Estimated T-Level:26.844
DigitsB1CompleteFacMiss
201100028.7310.000%
25500003.6772.531%
302500000.35969.834%
3510000000.02897.241%
4030000000.00299.820%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.049
250000250000002087.582
2500002850000070.267
25000034719594140.576
2500003850000070.301


Lucas-Lehmer results:
No L-L results for M260549


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T08:30:29Oliver KruseDoppelherz
545589607
1AD3ADB0B612F2__no
2017-09-22T10:03:11Oliver KruseManual testing
545589607
1AD3ADB0B612F2__no
2017-10-12T17:29:57Oliver KruseGTX-21AD3ADB0B612F2__no
2017-11-06T17:34:01kkmrkkblmbrbkc4.xlarge
545589607
1AD3ADB0B612F2__no
2020-04-17T20:17:35Oliver KruseAddPrpType5
545589607
434CDF9EC7306B__no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 10035812696910 (P-1 stage 2)
B1 = 30000000, B2 = 3000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-03T00:16:14+00:00