is 2 143262341 - 1
has 43126262 decimal digits
takes 797.892 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
Actual27426.705362.1622 %100000010000000051.63436.5369 %78.339664.6356 %
Target277213.651263.6364 %90000017000000081.66984.1247 %295.320965.1362 %
Difference-3-186.9458-1.4742 %+100000-70000000-30.0355+2.4123%-216.9813-0.5006 %

Known prime factors (1 factor, 88.6 bits, 0.00006187% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1432623414791878314962945895581780012788.6311672413797483229000
23 × 3 × 53 × 79 × 101 × 7727 × 9041971
2016-02-2877279041971437,5604.03737.4304

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-02-28ROMAN ALEXANDER FERNANDEZ ROCHAEQUIPO100000010000000022788.63151.635.018%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-17Charles A. Morrispulsar2632640.014
2010-12-19Xyzzy12642650.026
2012-01-12Never Odd Or EvenManual testing2652680.365
2012-01-12Never Odd Or EvenManual testing2682690.417
2012-01-12Never Odd Or EvenManual testing2692700.835
2012-04-02Never Odd Or EvenManual testing2702711.669
2012-04-02Never Odd Or EvenManual testing2712723.338
2013-03-05Never Odd Or EvenManual testing2722736.677
2013-03-05Never Odd Or EvenManual testing27327413.35


ECM factoring results:
No ECM results for M143262341


Lucas-Lehmer results:
No L-L results for M143262341


PRP results:
No PRP results for M143262341


CERT results:
No CERT results for M143262341


P-1 factor-bounds graph:
B1 = 1000000, B2 = 100000000 (P-1 stage 2)
B1 = 1000000 (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