is 2 17023751 - 1
has 5124660 decimal digits
takes 9.694 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDA653B7102A502A8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual274224.736966.2162%30213777729167600350.064010.2026%574.800969.6630%3.4468%
PrimeNet2650.428661.5385%8000024000000.17044.5311%0.599063.2812%1.7427%
GPU722697.013063.7681%12000032000000.23763.2960%7.250664.9623%1.1942%
Difference+5+217.7240+2.4481%+2901377+7725967600+349.8264+6.9066%+567.5504+4.7007%+2.2526%

Known prime factors (1 factor, 124.2 bits, 0.00072939% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
170237512391523793379482382518094868542113745738124.169702408004375616860972089778728
23 × 3 × 89 × 137 × 1129 × 338477 × 947719 × 6627732077
2022-03-1094771966277320771.081e+10298.90556.87

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-11-09T00:00:00Marzbugv4_computers2000003050000---0.293--2.025%
2022-02-15T04:23:58LaurVZero81830213773021377---2.495--2.543%
2022-03-10T01:26:07LaurVZero8183021377772916760038124.169350.119.39700.110.203%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-02-04T00:00:00Net_Forcev4_computers21258--0.002--
2001-03-05T00:00:00Net_Forcev4_computers21259--0.005--
2001-07-29T00:00:00oerwinv4_computers21265--0.429--
2014-03-13T02:11:00NesowaManual testing265266--0.439--
2014-09-15T13:04:00NesowaManual testing266267--0.878--
2015-11-13T18:40:58mikrManual testing267268--1.756--
2017-10-22T21:37:16ramgeisManual testing268269--3.512--
2019-12-19T14:00:09masserManual testing269270--7.023--
2021-09-09T16:34:25SRBaseManual testing270271--14.05--
2021-09-14T17:41:55-Anonymous-Manual testing271272--28.09--
2021-12-28T22:02:02Architects CubedGPU72_TF272273--56.19--
2021-12-31T18:34:08Jon PaceManual testing273274--112.4--


ECM factoring results:
Total ECM effort:0.866 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.866


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-01-09T00:00:00Marzbugv4_computersDA653B7102A502A89.69
2007-07-04T00:00:00Gnorfev4_computersDA653B7102A502A89.69


PRP results:
No PRP results for M17023751


P-1 factor-bounds graph:
B1 = 3021377, B2 = 7729167600 (P-1 stage 2)
B1 = 3021377 (P-1 stage 1)
B1 = 200000, B2 = 3050000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
109
1010
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
259
258
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2022-03-10T01:26:07+00:00