is 2 79221677 - 1
has 23848102 decimal digits
takes 247.210 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
Actual27596.588664.0000%665000126350005.95983.6970%102.548365.3309%1.3309%
PrimeNet2716.034761.9718%340000160000005.39895.2406%11.433663.9647%1.9929%
GPU7227596.588664.0000%500000170000006.32993.7782%102.918565.3601%1.3601%
Difference---+165000-4365000-0.3702-0.0812%-0.3702-0.0292%-0.0292%

Known prime factors (1 factor, 82.8 bits, 0.00010450% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7922167783312691124127049362464072582.78552582004243691439
11 × 29 × 31 × 149 × 6469 × 5516471
2016-08-266469551647114,9841.38762.5399

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-08-26T07:36:40Jwb52zClay665000126350002582.7855.960494.411.923.697%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-30T00:00:00ANONYMOUSv4_computers21253--1.51464e-5--
2001-05-06T00:00:00Jocelyn Larouchev4_computers21260--0.002--
2004-09-02T00:00:00ANONYMOUSv4_computers21263--0.020--
2016-04-04T03:57:36Mark RoseManual testing263264--0.025--
2016-04-05T13:02:24Mark RoseManual testing264265--0.047--
2010-11-16T11:52:00S00030vd01265266--0.094--
2010-11-18T07:59:00Charles A. Morrisnimbus266267--0.189--
2011-03-19T07:09:00ANONYMOUS_home-office267268--0.377--
2012-04-07T16:43:00ITSLJCA_-_ServerStation268269--0.755--
2013-01-22T00:59:00AllRandomManual testing269270--1.509--
2013-01-22T00:59:00AllRandomManual testing270271--3.018--
2013-01-22T00:59:00AllRandomManual testing271272--6.037--
2016-07-22T06:42:10cuBerBruceManual testing272273--12.07--
2016-08-23T16:37:18A_SavchenkoManual testing273274--24.15--
2016-08-23T16:37:18A_SavchenkoManual testing274275--48.30--


ECM factoring results:
No ECM results for M79221677


Lucas-Lehmer results:
No L-L results for M79221677


PRP results:
No PRP results for M79221677


P-1 factor-bounds graph:
B1 = 665000, B2 = 12635000 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-08-26T07:36:40+00:00