is 2 5027203 - 1
has 1513339 decimal digits
takes 0.697 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2675.910665.6716 %5000010000000.02052.2307 %5.931166.4374 %
Target2651.451264.6154 %3400035000000.04482.4182 %1.496065.4711 %
Difference+2+4.4594+1.0563 %+16000-2500000-0.0243-0.1875 %+4.4350+0.9663 %

Known prime factors (3 factors, 155.6 bits, 0.00309583% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5027203205782823793591444.2262046693
3 × 11 × 109 × 569
-1095694.695e-72.694e-54.459e-5
5027203218922223186571444.3152177376
25 × 3 × 37 × 613
2008-09-08376136.030e-71.374e-51.513e-5
50272031572670096357011934792167.09215641601267713
53 × 67 × 881 × 4999823
2019-09-2488149998236.05610.05490.1023

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-05-11This -Anonymous-Manual testing500001000000
skipped known factor: 20578282379359
skipped known factor: 21892222318657
--0.0202.865%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-08Will EdgingtonManual testing??
44.315
14


ECM factoring results:
Total ECM effort:0.632 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.632


Lucas-Lehmer results:
No L-L results for M5027203


PRP results:
dateuseridcompidcofactorsres64
2017-11-22Oliver KruseGTX-3
20578282379359
21892222318657
446D6BE821A4E568
2018-01-15kkmrkkblmbrbkc4.xlarge
20578282379359
21892222318657
446D6BE821A4E568
2019-09-25mnd950871b
20578282379359
21892222318657
157267009635701193479
446D6BE821A4E568


CERT results:
No CERT results for M5027203


P-1 factor-bounds graph:
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
TF factor-bounds graph:
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00