is 2 1484507 - 1
has 446882 decimal digits
takes 0.057 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L0758B4217456BB98double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.016068.6567 %500000010037484603.289311.4748 %23.305372.2533 %
Target2610.206965.5738 %60002500000.00110.9457 %0.208065.8993 %
Difference+6+19.8091+3.0829 %+4994000+1003498460+3.2882+10.5291%+23.0973+6.3540 %

Known prime factors (2 factors, 143.6 bits, 0.00966999% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1484507635790660865260970312065.78521414202185145
5 × 7 × 11 × 29 × 30643 × 62591
2011-01-0830643625914.91460.00180.0035
14845072570752183611509666123272477.76786586057984620809
86586057984620809
2019-04-2618658605798462080920,618261,166,400487,786,105

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers20000270000--0.0022.305%
2011-01-08Rob_Deetwopc2065.7850.0060.000%
2016-03-17alpertronManual testing5000001500000012
skipped known factor: 63579066086526097031
---8.666%
2023-11-24Anton TsvetkovManual testing50000001003748460
skipped known factor: 63579066086526097031
--3.28917.146%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-01-29ANONYMOUSv4_computers212570.013
2003-07-30ANONYMOUSv4_computers212580.026
2022-03-09LordJuliusManual testing21260
2022-03-08LordJuliusManual testing258260
2010-05-08Architects Cubedm1_f22602610.103


ECM factoring results:
Total ECM effort:29.882 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000018310.06
500005000000683.782
250000350000005016.04


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-29ANONYMOUSv4_computers0758B4217456BB980.057


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-2
63579066086526097031
079BA3B25FC00DF7
2017-10-28kkmrkkblmbrbkc4.xlarge
63579066086526097031
079BA3B25FC00DF7
2019-04-27Chang Chia-Tchehomura
63579066086526097031
257075218361150966612327
6A7E62915E21CCEA
2019-04-27ATHec2-PRPCFDC
63579066086526097031
257075218361150966612327
6A7E62915E21CCEA


CERT results:
No CERT results for M1484507


P-1 factor-bounds graph:
B1 = 5000000, B2 = 1003748460 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
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Last modified: 2024-02-09T03:30:02+00:00