is 2 750157 - 1
has 225820 decimal digits
takes 0.015 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L5FB9F59DF6508B99double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26739.610370.1493 %1525000518500000.12366.4233 %39.733872.0667 %
Target2440.000054.5455 %1200022500000.003916.6307 %0.003962.1049 %
Difference+23+39.6103+15.6038 %+1513000+49600000+0.1197-10.2074 %+39.7299+9.9618 %

Known prime factors (1 factor, 73.3 bits, 0.00977092% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
750157116056109228911927791772373.2977735454660085284
22 × 11 × 43 × 67 × 71 × 859471661
2014-05-31718594716612,549.91.35612.5328

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-12-07Alex Kruppav4_computers1000004000000--0.00924.695%
2002-05-25ANONYMOUSv4_computers163841638400--0.00320.248%
2002-07-20ANONYMOUSv4_computers32768327680012--0.00622.956%
2002-11-24ANONYMOUSv4_computers65537655370012--0.01225.614%
2003-06-30ANONYMOUSv4_computers1310721310720012--0.02428.216%
2011-06-19JossManual testing400000400000--0.01217.395%
2011-08-15JossManual testing482289482289--0.01417.976%
2011-10-29JossManual testing964578964578--0.02820.119%
2012-07-14JossManual testing15003141500314--0.04321.476%
2013-10-28David Campeaui5-2500k15250005185000012--0.10933.706%
2016-03-17alpertronManual testing5000001500000012---29.560%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-09-08ANONYMOUSv4_computers212550.006
2001-03-18ANONYMOUSv4_computers212560.013
2001-12-08ANONYMOUSv4_computers212570.026
2003-09-29ANONYMOUSv4_computers212580.051
2008-10-11Sturle Sundevancraft.ifi2582590.051
2008-10-11Sturle Sundevancraft.ifi2592600.102
2010-06-09Architects Cubedm1_f22602610.205


ECM factoring results:
Total ECM effort:11.247 GHz-days
Estimated T-Level:25.655
DigitsB1CompleteFacMiss
201100014.7310.000%
25500001.61319.937%
302500000.13187.717%
3510000000.00999.131%


ECM Summary

B1B2factorcurvesGHz-days
10.040
5000050000002796.213
25000025000000444.994


Lucas-Lehmer results:
No L-L results for M750157


PRP results:
dateuseridcompidcofactorsres64
2017-09-27Oliver KruseGTX-2
11605610922891192779177
8576119B9D9F6082
2017-09-28Oliver KruseManual testing
11605610922891192779177
8576119B9D9F6082
2017-11-09kkmrkkblmbrbkc4.large
11605610922891192779177
8576119B9D9F6082
2020-04-20Oliver KruseAddPrpType5
11605610922891192779177
7C77E47E14E82D9F


CERT results:
No CERT results for M750157


P-1 factor-bounds graph:
B1 = 1525000, B2 = 51850000 (P-1 stage 2)
B1 = 1525000 (P-1 stage 1)
B1 = 1500314 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 964578 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 482289 (P-1 stage 1)
B1 = 65537, B2 = 6553700 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65537 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (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:
261
260
259
258
257
256
255
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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Last modified: 2024-03-03T02:29:32+00:00