is 2 27183259 - 1
has 8182977 decimal digits
takes 25.163 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LCBB2BDF1E229486Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27235.181065.2778%30500040412500.68263.0846%35.863666.3488%1.0710%
PrimeNet2660.543362.1212%12000045000000.48145.2135%1.024764.0960%1.9748%
GPU722708.790464.2857%20000060000000.69263.9046%9.483065.6802%1.3945%
Difference+2+26.3906+0.9921%+105000-1958750-0.0100-0.8201%+26.3806+0.6686%+0.6686%

Known prime factors:
No known factors for M27183259

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-02-02T00:00:00twmossv4_computers3050004041250---0.683--3.085%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2004-03-26T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-10-18T00:00:00ANONYMOUSv4_computers21267--1.093--
2011-11-22T15:13:00Carsten KossendeyManual testing267268--1.100--
2011-11-24T13:43:00LaurVManual testing268269--2.199--
2017-03-26T22:07:01ramgeisManual testing269270--4.398--
2021-02-21T06:40:24mikrManual testing270271--8.797--
2021-04-21T02:40:07Sid & AndyManual testing271272--17.59--


ECM factoring results:
No ECM results for M27183259


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-03-06T00:00:00twmossv4_computersCBB2BDF1E229486B25.16
2012-02-14T17:21:00Andrei RyjkovRedAndr51CBB2BDF1E229486B25.16


PRP results:
No PRP results for M27183259


P-1 factor-bounds graph:
B1 = 305000, B2 = 4041250 (P-1 stage 2)
B1 = 305000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
272
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2100
Last modified: 2021-04-21T02:40:07+00:00