is 2 2292457 - 1
has 690099 decimal digits
takes 0.155 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L4AB428F0BD86EC96double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.961667.1642 %500000150000000.12645.2077 %13.088068.8742 %
Target2620.268064.5161 %1200010000000.00641.7364 %0.274465.1323 %
Difference+5+12.6936+2.6481 %+488000+14000000+0.1199+3.4713%+12.8135+3.7419 %

Known prime factors (1 factor, 59.4 bits, 0.00259208% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
22924577725327262207483271859.422168494485659
3 × 31 × 113 × 16033351
-113160333510.06340.08560.1598

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-08-08ANONYMOUSv4_computers2048204800--0.0010.788%
2016-04-23alpertronManual testing5000001500000012---8.309%


Trial Factoring results:
5758596061626364656667
No TF results for M2292457


ECM factoring results:
Total ECM effort:8.398 GHz-days
Estimated T-Level:21.373
DigitsB1CompleteFacMiss
20110002.9335.322%
25500000.27575.985%
302500000.01798.267%


ECM Summary

B1B2factorcurvesGHz-days
500005000000131.133
500007000000505.018
500003554212272.246


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-23ANONYMOUSv4_computers4AB428F0BD86EC960.155


PRP results:
dateuseridcompidcofactorsres64
2017-10-12kkmrkkblmbrbkc4.xlarge
772532726220748327
6AEDD55075B40CC2
2017-10-30Oliver KruseGTX-3
772532726220748327
6AEDD55075B40CC2


CERT results:
No CERT results for M2292457


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 62
TF double-checked to: 67
ECM T-Level=21.37 ~= 54-bit
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Last modified: 2024-03-13T02:15:48+00:00