is 2 1924243 - 1
has 579255 decimal digits
takes 0.104 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L663C412A3927BDA8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26715.441968.6567%1000000300000000.20296.2266%15.644870.6083%1.9516%
PrimeNet2570.010063.1579%90001700000.00143.0941%0.011464.2978%1.1399%
GPU722610.159665.5738%110001700000.00151.8137%0.161266.1982%0.6244%
Difference+6+15.2822+3.0829%+989000+29830000+0.2014+4.4129%+15.4836+4.4102%+4.4102%

Known prime factors (1 factor, 74.4 bits, 0.00386442% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1924243242565949847051507640072374.3616302892873900321
33 × 791209 × 295042747
2017-12-197912092950427472,487.91.32332.3617

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-09-28T15:45:00kurlyhex100000030000000---0.203--6.227%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-12-16T00:00:00ANONYMOUSv4_computers21258--0.020--
2016-02-23T16:28:58Mark RoseManual testing258260--0.060--
2009-06-05T06:39:00Architects Cubedi4l_1260261--0.080--
2016-02-23T16:28:58Mark RoseManual testing261262--0.160--
2011-08-27T22:20:00GrunwalderGIMPManual testing21263--0.829--
2016-02-23T16:28:58Mark RoseManual testing262263--0.510--
2015-05-17T18:51:00snme2pm1Manual testing263264--1.020--
2015-05-17T18:51:00snme2pm1Manual testing264265--1.942--
2015-09-03T11:06:00ramgeisManual testing265266--3.883--


ECM factoring results:

Old Calculation Method

Total ECM effort:20.393 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:20.393 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.8290.015%
25500000.78545.631%
302500000.04995.252%
3510000000.00299.776%


ECM Summary

B1B2factorcurvesGHz-days
500005000000362.501
50000500000030.208
50000750000021217.68


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-10T00:00:00ANONYMOUSv4_computers663C412A3927BDA80.104
2015-06-27T00:55:00MadPooManual testing663C412A3927BDA80.104


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-23T06:25:37BloodERazorManual testing
24256594984705150764007
FDC915032ED4B9__no
2017-12-25T17:58:53Oliver KruseGTX-6
24256594984705150764007
FDC915032ED4B9__no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
104
105
106
104
105
106
107
108
109
TF factor-bounds graph:
267
266
265
264
263
262
261
260
258
250
260
270
280
290
2100
Last modified: 2022-02-17T11:38:20+00:00