is 2 102187243 - 1
has 30761426 decimal digits
takes 406.868 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276149.764264.4737%8500001785000010.25463.8243%160.018868.2980%5.7980%
PrimeNet2729.358662.5000%450000220000009.37655.3786%18.735167.8786%5.3786%
GPU72276149.764264.4737%6500002200000010.46823.8506%160.232468.3243%3.8506%
Difference---+200000-4150000-0.2136-0.0263%-0.2136-0.0263%-0.0263%

Known prime factors (1 factor, 78.9 bits, 0.00007721% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1021872435639996514670195599130072478.9002759638262610821
23 × 41 × 40151 × 72885997
40151728859972021-01-13845.5623.14542.819

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-01-13T17:41:54Ben Deloi-083e358dcdf3a09c085000017850000122478.90010.25813.720.513.824%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-02T23:14:001997rj7Manual testing263264--0.019--
2010-08-17T14:24:00For Researchtcu_1264265--0.037--
2012-04-24T03:34:00ANONYMOUS265266--0.073--
2013-09-07T01:00:00processinfoManual testing266267--0.146--
2013-09-29T13:50:00SMoffatManual testing267268--0.293--
2013-10-02T18:50:00ANONYMOUSManual testing268269--0.585--
2014-04-30T13:03:00SWL551Manual testing269270--1.170--
2014-07-08T15:10:00symalladbasement270271--2.340--
2014-12-08T19:46:00shaugeManual testing271272--4.680--
2020-03-28T21:08:27SRBaseManual testing272273--9.360--
2020-03-31T05:40:07SRBaseManual testing273274--18.72--
2020-10-21T05:34:32ixfd64Manual testing274275--37.44--
2020-10-22T06:08:02Mark RoseManual testing275276--74.88--


ECM factoring results:
Exponent "102187243" not found


Lucas-Lehmer results:
Exponent "102187243" not found


PRP results:
Exponent "102187243" not found


P-1 factor-bounds graph:
B1 = 850000, B2 = 17850000 (stage 2)
B1 = 850000 (stage 1)
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108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
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264
250
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2100
Last modified: 2021-01-13T17:41:54+00:00