is 2 1909003 - 1
has 574668 decimal digits
takes 0.104 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L1FBDD257E9C0B2D5double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26715.565168.6567%500000150000000.10155.0944%15.666673.7512%10.5933%
PrimeNet2570.010163.1579%90001600000.00143.0407%0.011466.1986%3.0407%
GPU722610.160965.5738%100001700000.00151.7595%0.162467.3333%1.7595%
Difference+6+15.4042+3.0829%+490000+14830000+0.1000+3.3349%+15.5042+6.4179%+6.4179%

Known prime factors (1 factor, 118.4 bits, 0.00620212% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
190900343808813696006214589011831500087608136118.399114742652829791819575484772680
23 × 5 × 13 × 23 × 241 × 1087 × 7079 × 9871 × 92641 × 5657321		9264156573212011-06-138.879e+100.03110.0453

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-06-13T08:26:00kurlykurlytop5000001500000036118.3990.1010.2070.2035.094%
2016-03-16T12:41:38alpertronManual testing5000001500000012---0.101--5.094%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-04-14T00:00:00GrunwalderGIMPv4_computers?256--0.005--
2011-04-14T00:00:00GrunwalderGIMPv4_computers256257--0.005--
2003-01-09T00:00:00ANONYMOUSv4_computers?258--0.020--
2011-04-14T00:00:00GrunwalderGIMPv4_computers257258--0.010--
2011-04-14T00:00:00GrunwalderGIMPv4_computers258259--0.020--
2011-04-14T00:00:00GrunwalderGIMPv4_computers259260--0.040--
2011-04-14T00:00:00GrunwalderGIMPv4_computers260261--0.080--
2009-05-27T01:39:00For Researchi4l_1260261--0.080--
2011-03-04T04:42:00GrunwalderGIMPGWPrime02261262--0.161--
2011-03-04T08:06:00GrunwalderGIMPGWPrime02262263--0.514--


ECM factoring results:
Total ECM effort:1.629 GHz-days
Estimated T-Level:1.150
DigitsB1CurvesCompleteFacMiss
201100023 / 1000.23079.361%
255000023 / 2800.08292.100%

ECM Summary

B1B2factorcurvesGHz-days
500005000000161.110
50000584508270.519


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21T00:00:00ANONYMOUSv4_computers1FBDD257E9C0B2D50.104


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T20:38:48Oliver KruseGTX-1
438088136960062145890118315000876081
0F3709E292CE68__no
2017-11-15T07:28:47kkmrkkblmbrbkc4.xlarge
438088136960062145890118315000876081
0F3709E292CE68__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (stage 2)
B1 = 500000 (stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
267
263
262
261
260
259
258
257
256
250
260
270
280
290
2100
2110
2120
Last modified: 2021-02-03T00:15:37+00:00