is 2 2869751 - 1
has 863882 decimal digits
takes 0.222 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
Actual26710.354267.1642 %28697512869751002.054910.0074 %12.409170.4502 %
Target2630.556265.0794 %1600014000000.01021.8695 %0.566465.7322 %
Difference+4+9.7980+2.0848 %+2853751+285575100+2.0447+8.1379%+11.8427+4.7180 %

Known prime factors (6 factors, 268.2 bits, 0.00934574% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
286975135355332331031.719616
23 × 7 × 11
-8119.969e-119.142e-71.823e-6
2869751600122329131135.80510456
23 × 1307
2008-09-07813071.595e-98.822e-61.486e-5
28697511138028456571236.72819828
22 × 4957
2008-09-07449573.190e-93.067e-55.651e-5
286975117677895740091340.685308004
22 × 3 × 25667
2008-09-304256675.104e-80.00020.0003
2869751416200446690171445.2427251508
22 × 11 × 29 × 5683
2014-01-162956831.633e-63.775e-56.475e-5
28697513065232738757357898927512478.02053405900699352625
53 × 37 × 919 × 2399 × 5237593
2018-05-192399523759321,3320.03220.0597

57 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-06-15JossManual testing286975128697510012
skipped known factor: 3535533233
skipped known factor: 60012232913
skipped known factor: 113802845657
skipped known factor: 1767789574009
skipped known factor: 41620044669017
skipped known factor: 306523273875735789892751
---13.404%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-07Will EdgingtonManual testing??
35.805
11
2008-09-07Will EdgingtonManual testing??
36.728
12
2008-09-30markrManual testing??
40.685
13
2014-01-16TJAOIManual testing??
45.242
14
2019-06-18Seth_TrManual testing266267


ECM factoring results:
Total ECM effort:29.289 GHz-days
Estimated T-Level:24.982
DigitsB1CompleteFacMiss
201100010.7690.002%
25500000.99636.919%
302500000.06393.908%
3510000000.00399.707%


ECM Summary

B1B2factorcurvesGHz-days
50000500000027829.08
50000500000020.209


Lucas-Lehmer results:
No L-L results for M2869751


PRP results:
dateuseridcompidcofactorsres64
2017-10-23Oliver KruseGTX-2
3535533233
60012232913
113802845657
1767789574009
41620044669017
49871C80F1AD0641
2017-12-07kkmrkkblmbrbkc4.xlarge
3535533233
60012232913
113802845657
1767789574009
41620044669017
49871C80F1AD0641
2018-05-20Ismo Laitela6600K
3535533233
60012232913
113802845657
1767789574009
41620044669017
306523273875735789892751
49871C80F1AD0641
2018-05-23Oliver KruseGTX-6
3535533233
60012232913
113802845657
1767789574009
41620044669017
306523273875735789892751
49871C80F1AD0641


CERT results:
No CERT results for M2869751


P-1 factor-bounds graph:
B1 = 2869751, B2 = 286975100 (P-1 stage 2)
B1 = 2869751 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=24.98 ~= 66-bit
250
260
270
280
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Last modified: 2024-03-03T02:29:32+00:00