is 2 27304127 - 1
has 8219362 decimal digits
takes 25.275 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LD81E548E1EB77A19double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual274140.120466.2162%25500012750000.41691.7793%140.537366.8173%0.6011%
PrimeNet2660.540962.1212%12000045000000.48145.2165%1.022364.0972%1.9760%
GPU722708.751464.2857%20000060000000.69263.9069%9.444165.6811%1.3953%
Difference+4+131.3690+1.9305%+55000-4725000-0.2757-2.1277%+131.0932+1.1363%+1.1363%

Known prime factors:
No known factors for M27304127

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-08-01T00:00:00Vassilov4_computers2550001275000---0.417--1.779%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-11-05T00:00:00Jocelyn Larouchev4_computers21254--8.78932e-5--
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2004-04-09T00:00:00ANONYMOUSv4_computers21261--0.011--
2004-07-13T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-11-03T00:00:00ANONYMOUSv4_computers21267--1.088--
2012-01-15T13:18:00David CampeauManual testing267268--1.095--
2012-02-05T08:11:00Carsten KossendeyManual testing268269--2.189--
2017-04-03T20:40:01ramgeisManual testing269270--4.379--
2021-02-28T12:40:30mikrManual testing270271--8.758--
2021-08-23T16:28:22TheJudgerManual testing271272--17.52--
2021-08-23T16:28:22TheJudgerManual testing272273--35.03--
2021-09-12T12:48:59TheJudgerManual testing273274--70.06--


ECM factoring results:
No ECM results for M27304127


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-08-16T00:00:00Vassilov4_computersD81E548E1EB77A1925.28
2012-04-11T09:01:00Dry Creek PhotoDCP-G2D81E548E1EB77A1925.28


PRP results:
No PRP results for M27304127


P-1 factor-bounds graph:
B1 = 255000, B2 = 1275000 (P-1 stage 2)
B1 = 255000 (P-1 stage 1)
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107
TF factor-bounds graph:
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2100
Last modified: 2021-09-12T12:48:59+00:00