is 2 632147 - 1
has 190296 decimal digits
takes 0.010 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
Actual26747.004870.1493%1000000300000000.05685.4932%47.061671.7890%1.6398%
PrimeNet2400.000050.0000%60002200000.000420.6371%0.000460.3185%10.3185%
GPU722440.000054.5455%110004000000.000715.9065%0.000761.7757%7.2302%
Difference+23+47.0048+15.6038%+989000+29600000+0.0561-10.4133%+47.0609+10.0133%+10.0133%

Known prime factors (1 factor, 65.6 bits, 0.01037828% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
632147561516566520001937592065.60644413448653557
32 × 29 × 3917 × 43443061
2007-10-2639174344306115.8320.05220.0974

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-31T00:00:00Alex Kruppav4_computers200040000---8.96776e-5--0.110%
2001-05-27T00:00:00Alex Kruppav4_computers1000004000000---0.007--2.588%
2002-05-11T00:00:00ANONYMOUSv4_computers163841638400---0.002--1.216%
2002-06-29T00:00:00ANONYMOUSv4_computers327683276800---0.005--1.832%
2002-10-07T00:00:00ANONYMOUSv4_computers655366553600---0.009--2.589%
2003-05-19T00:00:00ANONYMOUSv4_computers13107213107200---0.018--3.474%
2016-03-17T18:49:59alpertronManual testing10000003000000012---0.057--5.493%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-01-12T00:00:00ANONYMOUSv4_computers253254--0.002--
2022-03-07T09:01:53LordJuliusManual testing254255--0.004--
2001-04-15T00:00:00ANONYMOUSv4_computers21256--0.015--
2001-10-25T00:00:00ANONYMOUSv4_computers21257--0.030--
2003-11-08T00:00:00ANONYMOUSv4_computers21258--0.061--


ECM factoring results:

Old Calculation Method

Total ECM effort:8.523 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:8.523 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002814.780
25000025000000443.742


Lucas-Lehmer results:
No L-L results for M632147


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27T13:15:35Oliver KruseGTX-1
56151656652000193759
3D6E6E87C51B1A__no
2017-09-28T09:44:18Oliver KruseManual testing
56151656652000193759
3D6E6E87C51B1A__no
2017-11-09T01:07:57kkmrkkblmbrbkc4.large
56151656652000193759
3D6E6E87C51B1A__no
2020-04-19T18:09:18Oliver KruseAddPrpType5
56151656652000193759
50B235BD945C53__no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 40000 (P-1 stage 2)
B1 = 2000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
267
258
257
256
255
254
250
260
270
280
290
2100
Last modified: 2022-03-07T09:01:53+00:00