is 2 26104777 - 1
has 7858321 decimal digits
takes 22.370 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L94D43FE5DC8267E6double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27373.275665.7534%1559659467897675.00005.4939%78.275667.6349%1.8815%
PrimeNet2660.565762.1212%12000045000000.44565.1856%1.011464.0855%1.9642%
GPU722709.153564.2857%19000055000000.59563.7860%9.749165.6379%1.3521%
Difference+3+64.1221+1.4677%+1369659+41289767+4.4044+1.7079%+68.5266+1.9971%+1.9971%

Known prime factors (1 factor, 93.9 bits, 0.00035967% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
26104777183715079324869483456524036232993.891351880192895096333243
479 × 43133 × 214211 × 79507459
2021-12-182142117950745978,222,6915.634210.053

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-10-18T00:00:00ANONYMOUSv4_computers385000385000---0.478--1.302%
2021-12-18T00:08:24GdSManual testing155965946789767122993.8915.00044.7410.005.494%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-07-26T00:00:00ANONYMOUSv4_computers21267--1.138--
2011-10-12T20:37:00ChuckManual testing267268--1.145--
2018-03-12T17:58:05VictordeHollanderManual testing268269--2.290--
2018-04-30T11:14:02VictordeHollanderManual testing269270--4.580--
2019-09-27T04:14:54-Anonymous-Manual testing270271--9.160--
2020-10-31T11:55:46XyzzyManual testing271272--18.32--
2021-01-02T11:40:35-Anonymous-Manual testing272273--36.64--


ECM factoring results:
No ECM results for M26104777


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-12-12T00:00:00curtiscv4_computers94D43FE5DC8267E622.37
2011-10-30T01:48:00Martin VeaseyOsiris94D43FE5DC8267E622.37


PRP results:
No PRP results for M26104777


P-1 factor-bounds graph:
B1 = 1559659, B2 = 46789767 (P-1 stage 2)
B1 = 1559659 (P-1 stage 1)
B1 = 385000 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2021-12-18T00:08:24+00:00