is 2 63291077 - 1
has 19052513 decimal digits
takes 148.675 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
Actual27460.448764.8649%555000101287503.66713.7063%64.115866.1671%1.3022%
PrimeNet2703.775462.8571%260000120000003.06435.1558%6.839764.7721%1.9150%
GPU7227460.448764.8649%400000140000003.88633.7856%64.335066.1949%1.3301%
Difference---+155000-3871250-0.2192-0.0793%-0.2192-0.0279%-0.0279%

Known prime factors (1 factor, 83.9 bits, 0.00013253% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
63291077177830166027578272090352412683.879140485969315689060
22 × 3 × 5 × 7 × 137 × 953 × 1021 × 2509253
2013-06-101021250925342,2060.46890.8697

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-06-10T00:14:00Jwb52zClay555000101287502683.8793.667297.47.3343.706%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-17T00:00:00ANONYMOUSv4_computers21250--2.36985e-6--
2003-07-30T00:00:00ANONYMOUSv4_computers21259--0.001--
2022-03-30T06:18:08LordJuliusManual testing21263--0.025--
2009-02-16T17:16:00Wojciech Florekarmada1263264--0.031--
2009-09-02T07:43:00Chris VernieriDimension4500264265--0.059--
2009-11-07T08:22:00jastahomelaptop265266--0.118--
2009-11-07T09:43:00ANONYMOUS266267--0.236--
2010-01-08T04:13:00ANONYMOUS267268--0.472--
2010-01-12T11:17:00duklahome268269--0.945--
2011-12-22T03:06:00GrunwalderGIMPcompute-0-6269270--1.889--
2012-05-31T12:01:00ITSMasterStation270271--3.778--
2013-04-27T09:22:00marssystemsManual testing271272--7.556--
2013-04-27T09:22:00marssystemsManual testing272273--15.11--
2013-05-06T18:27:00MikeBerlinManual testing273274--30.23--


ECM factoring results:
No ECM results for M63291077


Lucas-Lehmer results:
No L-L results for M63291077


PRP results:
No PRP results for M63291077


P-1 factor-bounds graph:
B1 = 555000, B2 = 10128750 (P-1 stage 2)
B1 = 555000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-30T06:18:08+00:00