is 2 2897023 - 1
has 872091 decimal digits
takes 0.224 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-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26710.256767.1642%2090001492029000.93256.7738%11.189269.3884%
Target2630.550965.0794%160003000000.00351.9086%0.554465.7459%
Difference+4+9.7058+2.0848%+193000+148902900+0.9290+4.8652%+10.6348+3.6425%

Known prime factors (2 factors, 95.3 bits, 0.00329045% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
289702369528553826.05112
22 × 3		-443.094e-124.480e-79.117e-7
28970237137777289819698745032169.274123191588223837
32 × 7 × 53 × 59 × 263 × 2377699		2023-01-11263237769978.1670.01450.0271

1 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-01-11USAFSS6917th_Scty_Sq2090001492029002169.2740.9330.4481.8656.774%


Trial Factoring results:
No TF results for M2897023


ECM factoring results:
Total ECM effort:0.314 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.314


Lucas-Lehmer results:
No L-L results for M2897023


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-23Oliver KruseGTX-0
69528553
D5A18E68C002D2__no
2017-12-08kkmrkkblmbrbkc4.xlarge
69528553
D5A18E68C002D2__no
2023-01-13LordJuliusWhiteBox
69528553
713777728981969874503
D5A18E68C002D28Cno


P-1 factor-bounds graph:
B1 = 209000, B2 = 149202900 (P-1 stage 2)
B1 = 209000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67.7
ECM T-Level=0.58 ~= -15-bit
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270
Last modified: 2023-03-25T13:08:14+00:00