is 2 60181283 - 1
has 18116372 decimal digits
takes 133.694 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC47CF656EDE5C055double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275127.147665.3333%705000200925005.67353.9479%132.821166.7019%1.3686%
PrimeNet2691.983862.3188%260000120000002.89795.6529%4.881764.4489%2.1301%
GPU7227331.784764.3836%400000140000003.67534.1546%35.460065.8633%1.4797%
Difference+2+95.3629+0.9498%+305000+6092500+1.9982-0.2067%+97.3611+0.8387%+0.8387%

Known prime factors:
No known factors for M60181283

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-09-09T07:06:00monstpoincare70500020092500---5.673--3.948%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21T00:00:00ANONYMOUSv4_computers21260--0.003--
2016-02-23T17:06:13Mark RoseManual testing260263--0.024--
2009-01-25T19:46:00abcC30D35CA5263264--0.033--
2009-02-01T10:36:00abcC30D35CA5264265--0.062--
2009-02-01T18:42:00Sturle Sundehaydn.ifi265266--0.124--
2009-04-06T15:10:00PrimeCruncherApollo7266267--0.248--
2009-04-08T01:49:00PrimeCruncherApollo7267268--0.497--
2009-06-24T07:06:00MillsieHome268269--0.993--
2011-11-24T23:09:00amberjrManual testing269270--1.987--
2011-11-24T23:09:00amberjrManual testing270271--3.973--
2011-11-24T23:09:00amberjrManual testing271272--7.947--
2012-11-12T10:51:00Tom DuellManual testing272273--15.89--
2014-01-10T09:59:00Craig MeyersManual testing273274--31.79--
2022-03-01T04:34:12Smok_bmvManual testing274275--63.58--


ECM factoring results:
No ECM results for M60181283


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-04-22T21:14:00curtischum115--03lC47CF656EDE5C055133.7
2021-05-23T16:56:36Dan NissennuisanceC47CF656EDE5C055133.7


PRP results:
No PRP results for M60181283


P-1 factor-bounds graph:
B1 = 705000, B2 = 20092500 (P-1 stage 2)
B1 = 705000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-01T04:34:12+00:00