is 2 27183301 - 1
has 8182989 decimal digits
takes 25.163 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L68B6B9DA0376D94Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.587264.7887%4200004200000.56371.7365%18.151065.4002%0.6114%
PrimeNet2660.543362.1212%12000045000000.48145.2135%1.024764.0960%1.9748%
GPU722708.790364.2857%20000060000000.69263.9046%9.483065.6802%1.3945%
Difference+1+8.7969+0.5030%+220000-5580000-0.1289-2.1682%+8.6680-0.2801%-0.2801%

Known prime factors (1 factor, 67.8 bits, 0.00024937% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
271833012545740512173557105912167.7874682544831795
3 × 5 × 17 × 18362920909
2011-11-2217183629209091.51081,342.92,508.1

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-10-04T00:00:00ANONYMOUSv4_computers420000420000---0.564--1.736%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-11-22T15:13:00Carsten KossendeyManual testing??67.787210.41851.290.851
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2004-03-26T00:00:00ANONYMOUSv4_computers21262--0.023--
2005-01-10T00:00:00ANONYMOUSv4_computers21267--1.093--
2011-11-22T15:13:00Carsten KossendeyManual testing267271--16.49--


ECM factoring results:
No ECM results for M27183301


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-11-01T00:00:00ANONYMOUSv4_computers68B6B9DA0376D94C25.16


PRP results:
No PRP results for M27183301


P-1 factor-bounds graph:
B1 = 420000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
271
267
262
256
2
250
260
270
280
290
2100
Last modified: 2011-11-22T15:13:28+00:00