is 2 36221219 - 1
has 10903674 decimal digits
takes 45.277 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LD5940FE5C2C2D246double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27113.198863.3803 %500000100000001.84444.5712 %15.043265.0543 %
Target27113.198863.3803 %260000400000004.39564.0233 %17.594464.8536 %
Difference---+240000-30000000-2.5512+0.5479%-2.5512+0.2007 %

Known prime factors (1 factor, 75.2 bits, 0.00020760% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
36221219432477550070580691348012375.195596994747844600
23 × 52 × 7 × 641 × 757 × 878797
2015-08-30757878797339.290.08810.1621

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2007-07-24srgrodeonv4_computers625000625000--1.1332.144%
2015-08-30HBendtzHAL9007500000100000001222375.1951.8444.571%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2006-03-01TheJudgerv4_computers212670.413
2012-01-12kdgehmanManual testing2672692.476
2014-08-24kdgehmanManual testing2692719.90


ECM factoring results:
No ECM results for M36221219


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2008-04-07srgrodeonv4_computersD5940FE5C2C2D24645.28


PRP results:
No PRP results for M36221219


CERT results:
No CERT results for M36221219


P-1 factor-bounds graph:
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 625000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
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105
106
101
102
103
104
105
106
107
TF factor-bounds graph:
271
269
267
this exponent TF target: 71
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00