is 2 27060227 - 1
has 8145941 decimal digits
takes 25.050 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LD5D0CB3A78200D9Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.667264.7887%28500031350000.59103.2011%18.258265.9159%1.1271%
PrimeNet2660.545862.1212%12000045000000.48145.2103%1.027164.0948%1.9736%
GPU722708.830364.2857%20000060000000.69263.9023%9.522965.6794%1.3937%
Difference+1+8.8369+0.5030%+85000-2865000-0.1016-0.7012%+8.7352+0.2365%+0.2365%

Known prime factors (1 factor, 67.5 bits, 0.00024959% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
270602272144198099270452349832167.5393961899690033
3 × 534851 × 2469161
2011-10-1853485124691611.60810.85941.4611

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-01-10T00:00:00ANONYMOUSv4_computers2850003135000---0.591--3.201%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-10-18T21:11:00Carsten KossendeyManual testing??67.539210.51051.061.040
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2002-08-31T00:00:00Jocelyn Larouchev4_computers21257--0.001--
2004-11-03T00:00:00Marvolov4_computers21267--1.098--
2011-10-18T21:11:00Carsten KossendeyManual testing267271--16.57--


ECM factoring results:
No ECM results for M27060227


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-02-02T00:00:00ANONYMOUSv4_computersD5D0CB3A78200D9D25.05


PRP results:
No PRP results for M27060227


P-1 factor-bounds graph:
B1 = 285000, B2 = 3135000 (P-1 stage 2)
B1 = 285000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
271
267
257
256
2
250
260
270
280
290
2100
Last modified: 2011-10-18T21:11:45+00:00