is 2 87222229 - 1
has 26256508 decimal digits
takes 280.928 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
Actual276175.459864.4737%700000127750006.34163.4224%181.801465.6895%1.2159%
PrimeNet2715.481261.9718%360000170000005.91535.3979%11.396464.0246%2.0527%
GPU7227587.728964.0000%550000200000007.51763.9951%95.246565.4382%1.4382%
Difference+1+87.7309+0.4737%+150000-7225000-1.1760-0.5727%+86.5549+0.2513%+0.2513%

Known prime factors (1 factor, 77.2 bits, 0.00008852% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
872222291744663031465012930286312477.2071000125226944735
3 × 5 × 67 × 376931 × 2640137
2018-06-213769312640137529.802.33623.5826

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-06-21T04:53:47Jwb52zClay700000127750002477.2076.342561.912.683.422%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-16T22:50:00Architects Cubedm1_44264265--0.043--
2013-03-05T20:22:00AxelssonManual testing265266--0.086--
2013-03-19T07:52:00VolondKsusha266267--0.171--
2013-03-24T17:16:00VolondKsusha267268--0.343--
2013-03-30T12:44:00SgarunLittle-Else268269--0.685--
2013-10-28T08:31:00g0bManual testing269270--1.371--
2014-08-26T12:05:00forrest-lumpkinHP_Netbook270271--2.742--
2017-05-14T03:55:09Judge HaleManual testing271272--5.483--
2017-05-14T03:55:09Judge HaleManual testing272273--10.97--
2017-06-12T12:49:48ANONYMOUSManual testing273274--21.93--
2018-05-21T20:09:39RichD0Manual testing274275--43.87--
2018-05-25T17:40:04Jon PaceManual testing275276--87.73--


ECM factoring results:
No ECM results for M87222229


Lucas-Lehmer results:
No L-L results for M87222229


PRP results:
No PRP results for M87222229


P-1 factor-bounds graph:
B1 = 700000, B2 = 12775000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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108
TF factor-bounds graph:
276
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2100
Last modified: 2018-06-21T04:53:47+00:00