is 2 5504717 - 1
has 1657085 decimal digits
takes 0.869 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA2EC48C3932019E8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.397965.6716%23500002138500003.176710.0695%8.574669.1283%3.4567%
PrimeNet2620.111662.9032%240005500000.01213.1617%0.123764.0761%1.1729%
GPU722662.682965.1515%340007000000.01612.1539%2.699065.9021%0.7506%
Difference+1+2.7150+0.5201%+2316000+213150000+3.1606+7.9156%+5.8756+3.2262%+2.7061%

Known prime factors (1 factor, 67.8 bits, 0.00123223% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
55047172624625763642688903992167.83123839788345547
83 × 139 × 2066376731
2015-06-0613920663767318.226925.77948.148

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-07-17T00:00:00ANONYMOUSv4_computers2000020000---0.005--0.376%
2010-04-29T03:24:00Squeeky_SquirrelP4_2600600001035000---0.026--2.375%
2021-09-15T12:22:54Dylan Delgadolaptop-ryzen737002350000213850000---3.177--10.069%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-03-31T00:00:00ANONYMOUSv4_computers21262--0.112--
1998-06-01T00:00:00ANONYMOUSv4_computers21262--0.112--
2009-05-01T01:03:00GrunwalderGIMPManual testing262263--0.178--
2014-12-01T20:53:00NesowaManual testing263264--0.357--
2014-12-02T14:44:00monstManual testing264265--0.679--


ECM factoring results:
Total ECM effort:0.720 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000030.720


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-14T00:00:00ANONYMOUSv4_computersA2EC48C3932019E80.869
2000-08-17T00:00:00ANONYMOUSv4_computersA2EC48C3932019E80.869


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-04T20:21:59Oliver KruseThreadripper
262462576364268890399
AF18DBD59AB6AF__no
2018-03-25T17:21:21kkmrkkblmbrbkc5.xlarge
262462576364268890399
AF18DBD59AB6AF__no


P-1 factor-bounds graph:
B1 = 2350000, B2 = 213850000 (P-1 stage 2)
B1 = 2350000 (P-1 stage 1)
B1 = 60000, B2 = 1035000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
265
264
263
262
250
260
270
280
290
2100
Last modified: 2021-09-15T12:22:54+00:00