is 2 39644207 - 1
has 11934096 decimal digits
takes 58.434 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L7186D6D4E9B76518double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27496.505064.8649%1500000450000008.27115.2107%104.776270.0755%8.3108%
PrimeNet2681.503561.7647%17000065000001.10045.0103%2.603966.7750%5.0103%
GPU7227224.122963.8889%26000080000001.45693.6721%25.579967.5610%3.6721%
Difference+2+72.3821+0.9760%+1240000+37000000+6.8142+1.5385%+79.1963+2.5145%+2.5145%

Known prime factors (1 factor, 129.1 bits, 0.00032561% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3964420772237564603461041332307141167564084529739129.0869110733959625052070319774736264
23 × 13 × 215801 × 265079 × 345311 × 756139 × 5865151
2021-05-0375613958651514.018e+92.21103.2889

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2008-01-15T00:00:00ANONYMOUSv4_computers4050003341250---1.207--2.601%
2008-09-06T00:00:00ANONYMOUSv4_computers4050003341250---1.207--2.601%
2021-05-03T21:51:14Sid & AndyManual testing15000004500000039129.0868.271116.916.545.211%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-01-28T00:00:00Jocelyn Larouchev4_computers?256--0.000--
2002-02-17T00:00:00Jocelyn Larouchev4_computers?257--0.000--
2006-11-28T00:00:00Team Prime Ribv4_computers?268--0.754--
2013-10-01T14:11:00Carsten KossendeyManual testing268269--1.508--
2014-12-14T15:44:00XyzzyManual testing269270--3.016--
2014-12-14T15:44:00XyzzyManual testing270271--6.032--
2019-07-26T11:55:06monstManual testing271272--12.06--
2019-10-13T10:50:49-Anonymous-Manual testing272273--24.13--
2020-02-14T20:10:40-Anonymous-Manual testing273274--48.25--


ECM factoring results:
Exponent "39644207" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2008-03-22T00:00:00ANONYMOUSv4_computers7186D6D4E9B7651858.43
2008-09-06T00:00:00ANONYMOUSv4_computers7186D6D4E9B7651858.43
2015-09-29T23:23:46ANONYMOUS7186D6D4E9B7651858.43


PRP results:
Exponent "39644207" not found


P-1 factor-bounds graph:
B1 = 1500000, B2 = 45000000 (stage 2)
B1 = 1500000 (stage 1)
B1 = 405000, B2 = 3341250 (stage 2)
B1 = 405000 (stage 1)
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104
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108
TF factor-bounds graph:
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257
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Last modified: 2021-05-03T21:51:14+00:00