is 2 12771007 - 1
has 3844457 decimal digits
takes 5.217 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRPC6633DF4578ED86EPRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.326764.1791%40000042845985014.05019.9934%16.376867.7588%3.5797%
PrimeNet2640.278762.5000%5500017000000.08574.2633%0.364464.0987%1.5987%
GPU722684.667264.7059%9000024000000.12783.1606%4.795165.8214%1.1155%
Difference-1-2.3405-0.5268%+310000+426059850+13.9223+6.8329%+11.5817+1.9375%+2.4642%

Known prime factors (2 factors, 180.4 bits, 0.00141263% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12771007643713829811048631755.8372520215633
13 × 3613 × 53657
2000-04-123613536570.00050.00380.0044
127710073156016818501423605382315754125689699938124.5691235617840668877405431817457357
29 × 61 × 379 × 1069 × 2423 × 52583 × 148763 × 90959009
2022-05-08148763909590091.477e+103.01855.4821

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1277100720315716731856325478741737511702580825995473960090
06137
55180.407
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-05-08T12:39:54nordisweet16_30.8b1440000042845985038124.56914.0510.4328.109.993%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-04-12T00:00:00ANONYMOUSv4_computers??55.837178.24054e-510.890.000


ECM factoring results:
No ECM results for M12771007


Lucas-Lehmer results:
No L-L results for M12771007


PRP results:
dateuseridcompidcofactorsres64PRP
2022-05-14T14:08:30Oliver KruseServer-Phi
64371382981104863
31560168185014236053823157541256896999
C6633DF4578ED86Eno


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
2
250
260
270
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290
2100
2110
2120
2130
Last modified: 2022-05-14T14:08:30+00:00