is 2 145090541 - 1
has 43676605 decimal digits
takes 832.004 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
Actual27426.368862.1622 %14150003608250027.47045.7484 %53.839264.3372 %
Target277210.959163.6364 %90000017000000084.08834.1308 %295.047465.1385 %
Difference-3-184.5903-1.4742 %+515000-133917500-56.6179+1.6176%-241.2081-0.8012 %

Known prime factors (1 factor, 77.6 bits, 0.00005349% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1450905412306391608447616006735912477.610794811154659495
3 × 5 × 29 × 31 × 8803 × 6695489
2016-05-1988036695489210.963.10245.6651

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-05-19-Old-Tom-office14150003608250022477.61027.474.402%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-19Charles A. Morrismagnetar2632640.014
2010-12-27Richardworkmy2642650.026
2012-01-11Never Odd Or EvenManual testing2652680.361
2012-01-11Never Odd Or EvenManual testing2682690.412
2012-01-11Never Odd Or EvenManual testing2692700.824
2012-04-04Never Odd Or EvenManual testing2702711.648
2012-04-05Never Odd Or EvenManual testing2712723.296
2013-03-05Never Odd Or EvenManual testing2722736.593
2013-03-05Never Odd Or EvenManual testing27327413.19


ECM factoring results:
No ECM results for M145090541


Lucas-Lehmer results:
No L-L results for M145090541


PRP results:
No PRP results for M145090541


CERT results:
No CERT results for M145090541


P-1 factor-bounds graph:
B1 = 1415000, B2 = 36082500 (P-1 stage 2)
B1 = 1415000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 77
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00