is 2 1807153 - 1
has 544008 decimal digits
takes 0.098 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.442468.6567%500000150000000.10155.0609%16.543970.2430%1.5863%
PrimeNet2570.010663.1579%80001500000.00122.8723%0.011964.2161%1.0582%
GPU722610.170065.5738%90001300000.00121.5556%0.171266.1093%0.5355%
Difference+6+16.2724+3.0829%+491000+14870000+0.1002+3.5053%+16.3727+4.1337%+4.1337%

Known prime factors (4 factors, 272.5 bits, 0.01508168% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1807153756479290901316231756.07020930139587
7 × 23 × 157 × 811 × 1021
-81110210.00666.470e-50.0001
180715311310313225218827211959.972312931811120
24 × 5 × 14503 × 269713
2015-07-11145032697130.05320.00220.0023
180715383206076854775778523992272.8172302131497852583
32 × 1129 × 226565446103
2020-10-161129226565446103557.03971.001,813.6
1807153155961605820823859283963772683.6894315119024809295596
22 × 132157 × 8162865048407
2021-02-1213215781628650484072,124,80634,98465,340

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18071538556017728485317378726855165938618335116.042
180715362943674017781201550861965361657631357739128.887
1807153941086791469144645902731235557732649767940132.790
1807153117981724979167426869363837459196024632987143139.760
18071531763974612941629719123845103280400639530181744143.662
180715312976953360321715453541159782332668451767235842348156.507
180715371191266868717339762956514770527101284237719602771
4003017
57188.860
180715313344102643660078093179646742961971182999891232979
25341058991
61199.732
180715398167964760756241574878446976340298590379791500324
37813902710529
64212.577
180715314677340721429459904701277826306759795489530729801
4948206282508983
66216.479
180715311103104301263971019256171324378795978881868971299
611484701368553581027538149869409
83272.549
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-07-11T12:16:00alpertronManual testing50000015000000121959.9720.0390.1960.0795.061%


Trial Factoring results:
No TF results for M1807153


ECM factoring results:

Old Calculation Method

Total ECM effort:17.312 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:17.312 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
500005000000986.759
50000500000060.414
50000500000014710.14


Lucas-Lehmer results:
No L-L results for M1807153


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T20:01:48Oliver KruseGTX-1
75647929090131623
1131031322521882721
6459C222F0D477__no
2017-11-05T15:35:10kkmrkkblmbrbkc4.xlarge
75647929090131623
1131031322521882721
6459C222F0D477__no
2020-10-17T14:19:06mrh.orgi
75647929090131623
1131031322521882721
8320607685477577852399
44BF169277486E88no
2021-02-12T12:53:37SRJ2877LTOS
75647929090131623
1131031322521882721
8320607685477577852399
15596160582082385928396377
44BF169277486E88no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2021-02-19T17:10:25+00:00