is 2 2300689 - 1
has 692577 decimal digits
takes 0.155 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LBFC3625DBA86AA88double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.915267.1642%50000005050000003.158210.9707%16.073470.7665%3.6023%
PrimeNet2580.016762.0690%100001900000.00192.9282%0.018663.1796%1.1107%
GPU722620.267064.5161%120002000000.00221.7376%0.269265.1327%0.6166%
Difference+5+12.6482+2.6481%+4988000+504800000+3.1560+9.2331%+15.8042+5.6338%+5.6338%

Known prime factors (2 factors, 150.4 bits, 0.00653502% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
230068951577985128294422231962.1611120924756199
137 × 229 × 35728963
2010-01-08229357289630.31130.19070.3561
23006893528139386729386897458899912788.18976675712943587483955
3 × 5 × 17 × 107 × 383 × 967 × 1543 × 4917481
2021-04-041543491748127,688,8850.02640.0490

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2300689181974320819278120623684899046103169124848999346150.350
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-08-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.284%
2021-04-04T13:48:30ViliamF350000005050000002788.1890.4900.3110.98010.971%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-27T03:10:46Dylan Delgadolaptop-ryzen73700200000014600000027--1.023


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-01-14T17:07:00Sturle Sundegoose.ifi260261--0.067--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.265 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.265 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000030.265


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00curtiscv4_computersBFC3625DBA86AA880.155


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-11T12:22:15Oliver KruseGTX-3
5157798512829442223
852DE4D80E5144__no
2017-11-22T15:39:04storm5510HP-Z220-CMT
5157798512829442223
852DE4D80E5144__no
2021-04-07T21:31:23Kiri
5157798512829442223
352813938672938689745889991
2A36B2CB6AF011__no


P-1 factor-bounds graph:
B1 = 5000000, B2 = 505000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
261
250
260
270
280
290
2100
Last modified: 2021-04-27T03:10:46+00:00