is 2 27152329 - 1
has 8173666 decimal digits
takes 25.135 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA4CBE206752F8431double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27235.221165.2778%13500001093500009.71016.8045%44.931167.6405%2.3627%
PrimeNet2660.543962.1212%12000045000000.48145.2127%1.025364.0957%1.9745%
GPU722708.800464.2857%20000060000000.69263.9040%9.493065.6800%1.3943%
Difference+2+26.4207+0.9921%+1150000+103350000+9.0175+2.9005%+35.4381+1.9604%+1.9604%

Known prime factors:
No known factors for M27152329

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-04-02T00:00:00ANONYMOUSv4_computers420000420000---0.564--1.541%
2021-04-02T00:48:31firejugglerMaison1350000109350000---9.71--6.805%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2002-08-31T00:00:00Jocelyn Larouchev4_computers21257--0.001--
2004-03-16T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-10-18T00:00:00Texaportv4_computers21267--1.094--
2004-11-22T00:00:00Texaportv4_computers21267--1.094--
2011-12-16T00:57:00David CampeauManual testing267268--1.101--
2011-12-20T09:36:00Aaron HavilandManual testing268269--2.202--
2017-03-24T22:40:18ramgeisManual testing269270--4.403--
2021-02-19T19:50:04mikrManual testing270271--8.807--
2021-04-22T14:40:09Sid & AndyManual testing271272--17.61--


ECM factoring results:
No ECM results for M27152329


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-04-26T00:00:00ANONYMOUSv4_computersA4CBE206752F843125.13
2012-02-01T01:01:00arnaudSRV-320A4CBE206752F843125.13


PRP results:
No PRP results for M27152329


P-1 factor-bounds graph:
B1 = 1350000, B2 = 109350000 (P-1 stage 2)
B1 = 1350000 (P-1 stage 1)
B1 = 420000 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2021-04-22T14:40:09+00:00