is 2 116828977 - 1
has 35169027 decimal digits
takes 539.523 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
Actual277261.991264.9351%970000881010900327.55746.6251%589.548667.2582%
Target276130.994864.4737%8000002800000015.28024.2044%146.275165.9674%
Difference+1+130.9964+0.4614%+170000+853010900+312.2772+2.4207%+443.2736+1.2908%

Known prime factors (1 factor, 97.6 bits, 0.00008358% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1168289772483754166109618950263361330313097.6481062987209975149808195
5 × 7 × 11 × 19 × 732 × 881 × 14332 × 15073
2022-11-0920534892053489526,545,29513.75127.985

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-11-09Simon Josefssoncto139700008810109003097.648327.61,079655.16.625%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-10Mr-Plonklinux-i7-920263264--0.017--
2010-10-10Donna NobleCCI_WC264265--0.032--
2012-07-03RichardUNKNOWN265266--0.064--
2014-12-06vwflat4j-laptop266267--0.128--
2015-03-29XebecerManual testing267268--0.256--
2015-03-29XebecerManual testing268269--0.512--
2015-03-29XebecerManual testing269270--1.023--
2015-03-29XebecerManual testing270271--2.047--
2015-03-29XebecerManual testing271272--4.094--
2020-10-19SRBaseManual testing272273--8.187--
2021-02-26Richard ThomasManual testing273274--16.37--
2021-06-13TheJudgerManual testing274275--32.75--
2021-06-13TheJudgerManual testing275276--65.50--
2021-11-18burkhajoManual testing276277--131.0--


ECM factoring results:
No ECM results for M116828977


Lucas-Lehmer results:
No L-L results for M116828977


PRP results:
No PRP results for M116828977


P-1 factor-bounds graph:
B1 = 970000, B2 = 881010900 (P-1 stage 2)
B1 = 970000 (P-1 stage 1)
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107
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109
TF factor-bounds graph:
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274
273
272
271
270
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268
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266
265
264
this exponent TF target: 76
TF double-checked to: 67.7
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Last modified: 2023-03-25T13:08:14+00:00