is 2 60921407 - 1
has 18339171 decimal digits
takes 135.339 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2691.959762.3188 %----1.959762.3188 %
Target27331.398664.3836 %4000007000000013.50334.1609 %44.901965.8655 %
Difference-4-29.4389-2.0647 %-400000-70000000-13.5033-4.1609 %-42.9422-3.5467 %

Known prime factors (1 factor, 70.2 bits, 0.00011518% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6092140713291333524751217021272270.17110908590411209
10908590411209
2012-03-291109085904112096.56371,914,4653,575,688

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-03-29Craig MeyersManual testing2270.1712.9320.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-06-01Gordon Spencev4_computers212590.001
2003-09-21Gordon Spencev4_computers212600.001
2022-03-29LordJuliusManual testing260263
2009-01-28Arjen RodenhuisM052632640.032
2009-03-31werdwerdusi7_factoring2642650.061
2009-09-03ANONYMOUS2652670.368
2009-09-07piero zamain_Stud2672680.491
2009-09-12piero zamain_Stud2682690.981


ECM factoring results:
No ECM results for M60921407


Lucas-Lehmer results:
No L-L results for M60921407


PRP results:
No PRP results for M60921407


CERT results:
No CERT results for M60921407


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
TF factor-bounds graph:
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265
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263
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259
this exponent TF target: 73
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00