is 2 43883299 - 1
has 13210190 decimal digits
takes 66.983 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LA6E217E1E031595Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27343.589364.3836 %1000000200000004.50444.7713 %48.093766.0829 %
Target27221.792763.8889 %300000500000006.65703.9719 %28.449765.3232 %
Difference+1+21.7967+0.4947 %+700000-30000000-2.1527+0.7994%+19.6440+0.7598 %

Known prime factors (1 factor, 78.0 bits, 0.00017768% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
438832992962924720906990852348812477.9713375913831030560
25 × 3 × 5 × 23 × 179 × 467 × 3658073
2019-01-1646736580731,286.30.44210.8239

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-04-23ANONYMOUSv4_computers655000655000--1.6492.007%
2019-01-16Sid & AndyPterodactyl1000000200000001222477.9714.5045.230%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2007-09-28Team Prime Ribv4_computers212680.681
2009-04-22ANONYMOUSv4_computers212691.362
2009-04-22ANONYMOUSv4_computers212691.362
2015-04-20LaurVManual testing2692702.725
2015-06-17Mark RoseManual testing2702715.449
2015-10-16ANONYMOUSManual testing27127210.90
2018-03-27Mark RoseManual testing27227321.80


ECM factoring results:
No ECM results for M43883299


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2009-06-13ANONYMOUSv4_computersA6E217E1E031595A76.19
2018-04-10endless_mikeEM_Core_i5_6500_1A6E217E1E031595A66.98


PRP results:
No PRP results for M43883299


CERT results:
No CERT results for M43883299


P-1 factor-bounds graph:
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 655000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
273
272
271
270
269
268
this exponent TF target: 72
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00