is 2 1183027 - 1
has 356127 decimal digits
takes 0.036 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L599D4758C94E554Fdouble-checked
PRP0D468CF2D5B449__PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual269100.916469.5652%11830271301329700.36506.3796%101.281471.5068%1.9416%
PrimeNet2560.008162.5000%5000800000.00042.2634%0.008563.3488%0.8488%
GPU722600.129865.0000%5000280000.00030.8002%0.130165.2801%0.2801%
Difference+9+100.7865+4.5652%+1178027+130104970+0.3647+5.5794%+101.1513+6.2268%+1.6615%

Known prime factors:
No known factors for M1183027

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-05-05T00:00:00Jocelyn Larouchev4_computers10001000---4.44667e-5--0.003%
2002-08-31T00:00:00Jocelyn Larouchev4_computers20002000---8.89333e-5--0.011%
2002-08-31T00:00:00Jocelyn Larouchev4_computers30003000---0.000--0.021%
2002-08-31T00:00:00Jocelyn Larouchev4_computers40004000---0.000--0.031%
2002-08-31T00:00:00Jocelyn Larouchev4_computers50005000---0.000--0.042%
2002-09-14T00:00:00Jocelyn Larouchev4_computers60006000---0.000--0.053%
2002-09-14T00:00:00Jocelyn Larouchev4_computers70007000---0.000--0.063%
2002-09-14T00:00:00Jocelyn Larouchev4_computers80008000---0.000--0.074%
2002-09-22T00:00:00Jocelyn Larouchev4_computers1000010000---0.000--0.094%
2003-09-21T00:00:00ANONYMOUSv4_computers100001000000---0.003--0.714%
2013-11-07T15:39:00David Campeaui5-2500k121500035235000---0.136--5.162%
2016-07-29T02:06:18Bruno Victal5820K-factoring25000006250000012---0.257--6.120%
2016-08-27T10:52:41Bruno VictalManual testing25000006250000012---0.257--6.120%
2018-04-20T11:44:59Jocelyn Larouchelow 4M118302711830270012---0.336--6.288%
2018-10-12T11:51:11Jocelyn Larouchelow 4M118302713013297012---0.365--6.380%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-03T00:00:00ANONYMOUSv4_computers21257--0.016--
2003-05-11T00:00:00ANONYMOUSv4_computers21258--0.032--
2016-02-23T16:28:23Mark RoseManual testing258260--0.097--
2009-02-17T22:54:00Sturle Sundeagrell.ifi260261--0.130--
2012-09-06T16:07:00AxelssonManual testing261262--0.260--
2012-11-24T17:08:00dbaughManual testing262263--0.830--
2015-01-03T05:42:00Matthias WurtingerManual testing263264--1.660--
2015-01-07T07:44:00lycornManual testing264265--3.158--
2015-09-30T08:41:11ramgeisManual testing265266--6.317--
2018-09-06T16:16:27YxinityManual testing266267--12.63--
2020-03-06T11:55:20Gordon SpenceManual testing267268--25.27--
2021-10-14T14:37:36MadPooManual testing268269--50.53--


ECM factoring results:
Total ECM effort:18.435 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000028110.34
25000025000000448.095


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-11-11T17:12:56MadPooManual testing599D4758C94E554F0.036


PRP results:
dateuseridcompidcofactorsres64PRP
2020-11-05T01:36:38Ethan O'ConnorHighland20200D468CF2D5B449__no


P-1 factor-bounds graph:
B1 = 1183027, B2 = 130132970 (P-1 stage 2)
B1 = 1183027, B2 = 118302700 (P-1 stage 2)
B1 = 2500000, B2 = 62500000 (P-1 stage 2)
B1 = 1215000, B2 = 35235000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 1215000 (P-1 stage 1)
B1 = 1183027 (P-1 stage 1)
B1 = 10000, B2 = 1000000 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 8000 (P-1 stage 1)
B1 = 7000 (P-1 stage 1)
B1 = 6000 (P-1 stage 1)
B1 = 5000 (P-1 stage 1)
B1 = 4000 (P-1 stage 1)
B1 = 3000 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-10-14T14:37:36+00:00