is 2 27099019 - 1
has 8157618 decimal digits
takes 25.085 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L2FFAF0B2EF66D9EBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.641964.7887%4150004150000.55701.7265%18.198965.3966%0.6079%
PrimeNet2660.545062.1212%12000045000000.48145.2113%1.026464.0952%1.9740%
GPU722708.817764.2857%20000060000000.69263.9030%9.510365.6797%1.3939%
Difference+1+8.8242+0.5030%+215000-5585000-0.1356-2.1765%+8.6887-0.2830%-0.7860%

Known prime factors (1 factor, 68.0 bits, 0.00025084% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
270990192900410858685787174172167.9755351505267932
22 × 23 × 269 × 216239909
2011-11-232692162399091.734415.81429.535

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2007-05-12T00:00:00ANONYMOUSv4_computers415000415000---0.557--1.726%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-11-23T06:14:00Carsten KossendeyManual testing??67.975210.63851.131.300
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2002-08-31T00:00:00Jocelyn Larouchev4_computers21257--0.001--
2004-03-08T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-10-03T00:00:00ANONYMOUSv4_computers21267--1.096--
2005-07-01T00:00:00ANONYMOUSv4_computers21267--1.096--
2011-11-23T06:14:00Carsten KossendeyManual testing267271--16.55--


ECM factoring results:
No ECM results for M27099019


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2007-05-28T00:00:00ANONYMOUSv4_computers2FFAF0B2EF66D9EB25.09


PRP results:
No PRP results for M27099019


P-1 factor-bounds graph:
B1 = 415000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
271
267
262
257
256
2
250
260
270
280
290
2100
Last modified: 2011-11-23T06:14:58+00:00