is 2 5012981 - 1
has 1509058 decimal digits
takes 0.695 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
Actual2675.927465.6716%----5.927465.6716%0.0000%
PrimeNet2610.061362.2951%220004500000.00913.3147%0.070463.5449%1.2498%
GPU722651.455464.6154%340007000000.01412.4171%1.469565.4707%0.8553%
Difference+2+4.4720+1.0563%-34000-700000-0.0141-2.4171%+4.4579+0.2010%+0.2010%

Known prime factors (3 factors, 187.2 bits, 0.00373396% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
501298125694034115511341.225256275
32 × 52 × 17 × 67
-25678.595e-85.485e-61.023e-5
501298150378932221111405771962.128502484771248
24 × 41 × 443 × 1303 × 1327
2016-06-30130313270.22040.00030.0005
5012981171985692039412206545091292683.8301715403390112711444
22 × 95351023 × 4497600907
2019-09-16953510234497600907578,88467.37091.985

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
50129811294438003192202438502754660492732103.352
50129814419006238640253862457102116387354907938125.055
50129818664455522254487012665840266385010024882743344145.958
501298122262481578112580333161032527609671383981056033767
7878583
57187.183
P-1 results:
No P-1 results for M5012981


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-06-30T15:38:36TJAOIManual testing262263*62.128190.0981.4130.199


ECM factoring results:

Old Calculation Method

Total ECM effort:0.632 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.632 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.632


Lucas-Lehmer results:
No L-L results for M5012981


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:41:19kkmrkkblmbrbkManual testing
2569403411551
5037893222111140577
3BE2A3E514ADE8__no
2018-04-26T12:01:54Oliver KruseGTX-4
2569403411551
5037893222111140577
3BE2A3E514ADE8__no
2019-09-17T04:11:25mnd9office2
2569403411551
5037893222111140577
17198569203941220654509129
B2952E5748356069no
2019-09-18T07:03:16marssystemsSYSTEM01
2569403411551
5037893222111140577
17198569203941220654509129
B2952E5748356069no


P-1 factor-bounds graph:
100
101
102
103
104
105
106
107
108
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
263
240
250
260
270
280
290
2100
Last modified: 2019-09-18T07:03:16+00:00