is 2 50004413 - 1
has 15052829 decimal digits
takes 91.605 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L3296B2B5D32E9436double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275153.024765.3333%18000005000000011.75715.0780%164.781767.0937%1.7604%
PrimeNet2692.387562.3188%22000090000001.85515.1318%4.242664.2526%1.9337%
GPU7227338.253564.3836%340000110000002.44593.7861%40.699465.7320%1.3485%
Difference+2+114.7712+0.9498%+1460000+39000000+9.3112+1.2919%+124.0823+1.3617%+1.3617%

Known prime factors (1 factor, 91.0 bits, 0.00018198% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5000441324737154497138010512967499212890.99924734971388563255920
24 × 3 × 5 × 23 × 2111 × 82847 × 25621663
2019-02-0282847256216638,465,9183.91616.9256

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-10-27T01:09:00QuesterWork_PC7_P4_3.259500013982500---3.518--3.515%
2019-02-02T14:46:33mikrS06518000005000000062890.99911.76183.223.515.078%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-07T00:00:00ANONYMOUSv4_computers21253--2.39963e-5--
1999-12-30T00:00:00ANONYMOUSv4_computers21253--2.39963e-5--
2000-02-09T00:00:00ANONYMOUSv4_computers21254--4.79927e-5--
2000-03-15T00:00:00ANONYMOUSv4_computers21260--0.003--
2008-07-10T21:55:00George WoltmanManual testing21264--0.071--
2009-02-07T16:01:00lindedKCTZ73M264265--0.075--
2009-02-09T09:00:00lindedKCTZ73M265266--0.149--
2009-02-11T04:32:00tmorrowMoo3266267--0.299--
2009-09-21T02:52:00SAHS Physics ClubPhysics_Club_1267268--0.598--
2009-11-01T07:25:00TexaportEE3000nat268269--1.196--
2011-12-19T03:11:00GregManual testing269270--2.391--
2012-01-16T09:16:00BdotManual testing270271--4.782--
2012-02-01T01:37:00Kevin JagetManual testing271272--9.56--
2015-04-02T02:20:00monstManual testing272273--19.13--
2017-02-08T21:00:06Bruno VictalManual testing273274--38.26--
2017-02-08T21:00:08Bruno VictalManual testing274275--76.51--


ECM factoring results:
No ECM results for M50004413


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-03-13T03:55:00Steve Jacobsonp4s2800a3296B2B5D32E943691.61
2016-11-02T10:31:45ANONYMOUSlwj3296B2B5D32E943691.61


PRP results:
No PRP results for M50004413


P-1 factor-bounds graph:
B1 = 1800000, B2 = 50000000 (P-1 stage 2)
B1 = 1800000 (P-1 stage 1)
B1 = 595000, B2 = 13982500 (P-1 stage 2)
B1 = 595000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-02-02T14:46:33+00:00