is 2 5028869 - 1
has 1513841 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-L408076FB6350073Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.908765.6716%550009075000.02042.2228%5.929166.4347%0.7631%
PrimeNet2610.061162.2951%220004500000.00913.3164%0.070263.5455%1.2504%
GPU722651.450864.6154%340007000000.01412.4184%1.464965.4711%0.8557%
Difference+2+4.4579+1.0563%+21000+207500+0.0063-0.1955%+4.4642+0.9636%+0.9636%

Known prime factors (1 factor, 72.1 bits, 0.00143307% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
502886949480801087453496965132272.067491967488986624
29 × 7 × 137267714561
2010-07-08512137267714561308.901,503.12,807.4

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2006-01-15T00:00:00Jocelyn Larouchev4_computers20002000---0.000--0.030%
2009-07-20T02:34:00harleeP4_260055000907500---0.020--2.223%


Trial Factoring results:
No TF results for M5028869


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
No L-L results for M5028869


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-23T00:42:32Oliver KruseGTX-2
4948080108745349696513
4AB93396B020FE__no
2018-01-15T13:27:02kkmrkkblmbrbkc4.xlarge
4948080108745349696513
4AB93396B020FE__no


P-1 factor-bounds graph:
B1 = 55000, B2 = 907500 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2018-01-15T13:27:02+00:00