is 21052939-1
has 316,967 decimal digits
takes 0.031 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LA228BA3509CDF6EBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2631.515866.6667%400,00028,000,0000.08187.5255%1.597674.1922%11.6922%
PrimeNet2560.009162.5000%4,50065,0000.00032.0089%0.009564.5089%2.0089%
GPU722600.145965.0000%4,50019,0000.00020.6337%0.146165.6337%0.6337%
Difference+3+1.3699+1.6667%+395,500+27,981,000+0.0816+6.8918%+1.4515+8.5585%+8.5585%

Known prime factors (2 factors, 153.8 bits, 0.01460679% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
105293929820078509228465120332271.3371416040174655344
24 × 7 × 24979 × 506153803
24,979506,153,8032017-03-31613.701.18622.2135
105293966693622742370368970764392582.4643167022151443263521
211 × 81883 × 234613 × 781309
234,613781,3092011-01-081,461,9780.01140.0205

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
10529391988809066242349450008570906477826694613429048747153.801
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-08-24T00:00:00ANONYMOUSv4_computers15,000195,000---0.001--1.361%
2003-02-09T00:00:00ANONYMOUSv4_computers2,048204,800---0.001--0.524%
2003-02-16T00:00:00ANONYMOUSv4_computers4,096409,600---0.001--0.969%
2011-01-07T20:02:00Rob_Deetwopc200,00015,000,000---0.043--6.229%
2011-01-07T20:49:00Rob_Deetwopc200,00017,000,000---0.048--6.360%
2011-01-07T21:14:00Rob_Deetwopc200,00020,000,000---0.055--6.532%
2011-01-07T21:57:00Rob_Deetwopc200,00025,000,000---0.067--6.769%
2011-01-08T16:10:00Rob_Deetwopc250,00026,000,000---0.071--7.022%
2011-01-08T16:45:00Rob_Deetwopc300,00027,000,000---0.075--7.231%
2011-01-08T17:31:00Rob_Deetwopc400,00028,000,000---0.082--7.525%
2011-01-08T23:55:00Rob_Deetwopc400,00028,000,0002582.4640.0820.0620.1647.525%
2016-03-17T18:59:40alpertronManual testing300,00010,000,00012---0.036--6.112%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-14T00:00:00ANONYMOUSv4_computers?257--0.018--
2003-02-16T00:00:00ANONYMOUSv4_computers?258--0.036--
2003-03-16T00:00:00ANONYMOUSv4_computers?259--0.036--
2009-02-15T04:12:00Sturle Sundegigi.ifi260261--0.146--
2010-11-11T15:41:00Michael CManual testing261262--0.292--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,0002328.119
50,0005,000,000491.715
250,00025,000,000447.699


Lucas-Lehmer results:
Exponent "1052939" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T20:38:53Oliver KruseGTX-1
2982007850922846512033
6669362274237036897076439
36874E1824DA85B7no
2017-10-05T21:14:45Oliver KruseManual testing
2982007850922846512033
6669362274237036897076439
36874E1824DA85__no
2017-10-16T00:15:41Oliver KruseThreadripper
2982007850922846512033
6669362274237036897076439
36874E1824DA85__no
2017-12-28T07:28:13ATHec2-1xf
2982007850922846512033
6669362274237036897076439
36874E1824DA85__no


P-1 factor-bounds graph:
B1 = 400,000, B2 = 28,000,000 (stage 2)
B1 = 300,000, B2 = 27,000,000 (stage 2)
B1 = 250,000, B2 = 26,000,000 (stage 2)
B1 = 200,000, B2 = 25,000,000 (stage 2)
B1 = 200,000, B2 = 20,000,000 (stage 2)
B1 = 200,000, B2 = 17,000,000 (stage 2)
B1 = 200,000, B2 = 15,000,000 (stage 2)
B1 = 300,000, B2 = 10,000,000 (stage 2)
B1 = 400,000 (stage 1)
B1 = 300,000 (stage 1)
B1 = 250,000 (stage 1)
B1 = 200,000 (stage 1)
B1 = 4,096, B2 = 409,600 (stage 2)
B1 = 15,000, B2 = 195,000 (stage 2)
B1 = 15,000 (stage 1)
B1 = 2,048, B2 = 204,800 (stage 2)
B1 = 4,096 (stage 1)
B1 = 2,048 (stage 1)
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109
TF factor-bounds graph:
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Last modified: 2020-03-30T08:09:30+00:00