is 2 61769167 - 1
has 18594373 decimal digits
takes 145.100 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
Actual27330.967664.3836%580000107300003.85924.1452%34.826865.8599%1.4764%
PrimeNet2703.868462.8571%260000120000003.06435.1402%6.932764.7664%1.9092%
GPU7227461.938164.8649%400000130000003.70073.7200%65.638866.1719%1.3070%
Difference-1-30.9705-0.4813%+180000-2270000+0.1584+0.4252%-30.8120-0.3120%-0.3120%

Known prime factors (1 factor, 81.6 bits, 0.00013203% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6176916735527903990801788214386892581.55528758607017318032
24 × 14081 × 45119 × 2829143
2013-02-254511928291439,527.90.67030.9806

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-02-25T20:25:00Jwb52zClay580000107300002581.5553.859290.27.7184.145%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-17T00:00:00ANONYMOUSv4_computers21259--0.001--
2003-11-28T00:00:00ANONYMOUSv4_computers21260--0.002--
2004-04-09T00:00:00ANONYMOUSv4_computers21262--0.010--
2022-03-29T23:12:09LordJuliusManual testing262263--0.016--
2009-04-10T07:36:00CPSlackerbf-st-2k3-64-2p263264--0.032--
2009-04-11T07:57:00CPSlackerbf-st-2k3-64-2p264265--0.060--
2009-04-12T02:05:00S00030vd10265266--0.121--
2009-09-25T09:34:00Gnorfe_d2266267--0.242--
2009-09-29T02:10:00Gnorfe_d2267268--0.484--
2009-10-03T17:48:00Gnorfe_d2268269--0.968--
2011-12-14T10:12:00ANONYMOUS269270--1.936--
2013-02-09T16:35:00XyzzyManual testing270271--3.871--
2013-02-11T17:23:00AntonioKManual testing271272--7.743--
2013-02-21T22:32:00Kevin JagetManual testing272273--15.49--


ECM factoring results:
No ECM results for M61769167


Lucas-Lehmer results:
No L-L results for M61769167


PRP results:
No PRP results for M61769167


P-1 factor-bounds graph:
B1 = 580000, B2 = 10730000 (P-1 stage 2)
B1 = 580000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-29T23:12:09+00:00