is 2 2404777 - 1
has 723911 decimal digits
takes 0.162 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE293B4226CE6C713double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.356267.1642%2000000600000000.50557.6168%12.861769.6652%2.5010%
PrimeNet2590.031962.7119%100001700000.00182.4806%0.033863.6368%0.9250%
GPU722630.663765.0794%100001400000.00171.2754%0.665465.5247%0.4454%
Difference+4+11.6925+2.0848%+1990000+59860000+0.5038+6.3415%+12.1963+4.1405%+4.1405%

Known prime factors (1 factor, 110.6 bits, 0.00459801% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2404777192968902811533793566710776780332734110.572401219952643288324794171719
59 × 217319 × 1497619 × 1888879 × 11061839
2014-02-241888879110618395.754e+100.23400.3766

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.288%
2010-11-08T22:12:00Jocelyn LaroucheManual testing1500015000---0.001--0.244%
2010-11-16T23:08:00Jocelyn LaroucheManual testing2000020000---0.002--0.311%
2010-12-22T12:47:00markrtiny950001923750---0.019--2.659%
2014-02-24T09:20:00mikrMSI20000006000000034110.5720.5050.3251.0117.617%
2018-09-28T16:26:04alpertronManual testing20000006000000012-
skipped known factor: 1929689028115337935667107767803327
--0.505--7.617%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-15T00:00:00ANONYMOUSv4_computers21259--0.032--
2022-03-09T16:37:58LordJuliusManual testing21260--0.064--
2009-01-14T18:23:00Sturle Sundegigotte.ifi260261--0.064--
2012-06-03T12:43:00Sebastian HornbostelManual testing261262--0.128--
2013-01-23T08:28:00dbaughManual testing262263--0.408--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.068 GHz-days
Estimated T-Level:0.600
DigitsB1CurvesCompleteFacMiss
201100012 / 1000.12088.638%
255000012 / 2800.04395.797%

New Calculation Method

Total ECM effort:1.068 GHz-days
Estimated T-Level:0.600
DigitsB1CompleteFacMiss
20110000.38767.903%
25500000.03596.562%
302500000.00299.785%


ECM Summary

B1B2factorcurvesGHz-days
500005000000121.068


Lucas-Lehmer results:
No L-L results for M2404777


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-13T00:05:52Oliver KruseGTX-2D3874C7037D809__no
2017-11-26T11:48:54kkmrkkblmbrbkc4.xlarge
1929689028115337935667107767803327
D3874C7037D809__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 95000, B2 = 1923750 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
267
263
262
261
260
259
250
260
270
280
290
2100
2110
2120
Last modified: 2022-03-09T16:37:58+00:00