is 2 1363381 - 1
has 410419 decimal digits
takes 0.052 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE771C7A4BF966985double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26721.794368.6567%4258086150000000.26815.7620%22.062470.4627%1.8060%
PrimeNet2560.007062.5000%60001000000.00062.6181%0.007763.4818%0.9818%
GPU722600.112765.0000%5500500000.00041.0671%0.113165.3735%0.3735%
Difference+7+21.6816+3.6567%+4252586+14950000+0.2677+4.6948%+21.9493+5.0892%+5.0892%

Known prime factors (1 factor, 112.4 bits, 0.00824077% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1363381663240385496453050949705524445964134112.3532432336909112174259982006220
22 × 3 × 5 × 7 × 11 × 13 × 97 × 173 × 571 × 8839 × 266291 × 1795663
2014-08-2126629117956639.416e+100.01940.0300

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-04-07T00:00:00Jocelyn Larouchev4_computers20000280000---0.002--0.958%
2014-04-12T16:56:00ANONYMOUSManual testing150000150000---0.008--1.066%
2014-04-20T11:29:00Jocelyn LaroucheManual testing200000200000---0.011--1.241%
2014-08-21T08:37:00mikrMSI42580861500000034112.3530.2360.1040.4715.762%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-03T00:00:00ANONYMOUSv4_computers21257--0.014--
2003-06-30T00:00:00ANONYMOUSv4_computers21258--0.028--
2022-03-07T17:32:37LordJuliusManual testing258260--0.084--
2009-02-17T00:23:00Sturle Sundehindemith.ifi260261--0.113--
2011-05-09T14:44:00XyzzyManual testing261262--0.225--
2013-01-23T08:20:00dbaughManual testing262263--0.720--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.246 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.246 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.2630.000%
25500001.35725.749%
302500000.11389.315%
3510000000.00899.236%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025111.76
250000350000005013.49


Lucas-Lehmer results:
No L-L results for M1363381


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T09:23:49Oliver KruseGTX-2
6632403854964530509497055244459641
75E61DF724196E__no
2017-11-04T20:27:13kkmrkkblmbrbkc4.xlarge
6632403854964530509497055244459641
75E61DF724196E__no


P-1 factor-bounds graph:
B1 = 4258086, B2 = 15000000 (P-1 stage 2)
B1 = 4258086 (P-1 stage 1)
B1 = 200000 (P-1 stage 1)
B1 = 150000 (P-1 stage 1)
B1 = 20000, B2 = 280000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
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105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
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261
260
258
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2100
2110
2120
Last modified: 2022-03-07T17:32:37+00:00