is 2 23436989 - 1
has 7055237 decimal digits
takes 19.010 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE8752E3B8CC20FD6double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275326.488566.6667%503000314050002.57173.6395%329.060367.8798%1.2132%
PrimeNet2660.630162.1212%10000036000000.34194.7657%0.972063.9264%1.8052%
GPU7227010.195464.2857%16000045000000.46633.4834%10.661765.5298%1.2441%
Difference+5+316.2931+2.3810%+343000+26905000+2.1054+0.1561%+318.3985+2.3500%+2.3500%

Known prime factors:
No known factors for M23436989

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-09-02T00:00:00ANONYMOUSv4_computers335000335000---0.394--0.929%
2021-04-05T06:38:04James Heinrichi3-810050300031405000---2.572--3.639%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-09-10T00:00:00Net_Forcev4_computers21256--0.000--
2003-08-25T00:00:00Donna Noblev4_computers21267--1.268--
2016-06-10T01:52:14VictordeHollanderManual testing267268--1.275--
2018-01-03T12:36:39VictordeHollanderManual testing268269--2.551--
2018-08-23T10:40:35ramgeisManual testing269270--5.102--
2021-08-29T02:30:16mikrManual testing270271--10.20--
2021-09-06T17:24:46TheJudgerManual testing271272--20.41--
2021-09-06T17:24:46TheJudgerManual testing272273--40.81--
2021-09-19T17:18:46TheJudgerManual testing273274--81.62--
2021-10-22T16:54:35TheJudgerManual testing274275--163.2--


ECM factoring results:
No ECM results for M23436989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-09-16T00:00:00ANONYMOUSv4_computersE8752E3B8CC20FD619.01
2010-03-24T23:30:00kdelisle2005HP_AMD_HmCoresE8752E3B8CC20FD619.01


PRP results:
No PRP results for M23436989


P-1 factor-bounds graph:
B1 = 503000, B2 = 31405000 (P-1 stage 2)
B1 = 503000 (P-1 stage 1)
B1 = 335000 (P-1 stage 1)
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108
TF factor-bounds graph:
275
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256
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2100
Last modified: 2021-10-22T16:54:35+00:00