is 2 65414627 - 1
has 19691765 decimal digits
takes 158.676 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
Actual27458.486464.8649%580000102950003.90173.7542%62.388166.1839%1.3190%
PrimeNet2703.652962.8571%280000130000003.42245.3032%7.075264.8269%1.9698%
GPU7227458.486464.8649%450000140000004.17943.8648%62.665766.2228%1.3579%
Difference---+130000-3705000-0.2777-0.1107%-0.2777-0.0389%-0.0389%

Known prime factors (1 factor, 77.7 bits, 0.00011878% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
654146272458796671333329205141372477.7021879393634189284
22 × 47 × 2591 × 3943 × 978511
2013-09-263943978511668.850.20060.3502

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-09-26T20:27:00Jwb52zClay580000102950002477.7023.902317.47.8033.754%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-11-08T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-05-11T00:00:001997rj7v4_computers21260--0.002--
2022-03-30T15:46:52LordJuliusManual testing260263--0.022--
2009-01-11T00:49:00Wojciech FlorekManual testing263264--0.030--
2009-03-19T10:03:00ANONYMOUS264265--0.057--
2009-10-29T21:03:00BillD2265266--0.114--
2009-11-03T22:08:00BillD2266267--0.228--
2009-11-05T05:46:00Sturle Sundegimba.ifi267268--0.457--
2009-11-12T06:48:00SkiDragonASUS_Laptop268269--0.914--
2012-02-20T05:46:00AmothTPx120e269270--1.828--
2013-05-21T18:32:00TheJudgerManual testing270271--3.656--
2013-05-21T18:32:00TheJudgerManual testing271272--7.311--
2013-05-21T18:32:00TheJudgerManual testing272273--14.62--
2013-09-20T22:43:00Jerry HallettManual testing273274--29.24--


ECM factoring results:
No ECM results for M65414627


Lucas-Lehmer results:
No L-L results for M65414627


PRP results:
No PRP results for M65414627


P-1 factor-bounds graph:
B1 = 580000, B2 = 10295000 (P-1 stage 2)
B1 = 580000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-30T15:46:52+00:00