is 2 1690253 - 1
has 508817 decimal digits
takes 0.080 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26717.579668.6567%500000150000000.08805.0203%17.667670.2302%1.5735%
PrimeNet2570.011463.1579%80001300000.00102.7283%0.012464.1631%1.0052%
GPU722610.181765.5738%7000900000.00081.2571%0.182566.0065%0.4328%
Difference+6+17.3978+3.0829%+493000+14910000+0.0872+3.7632%+17.4851+4.2237%+4.2237%

Known prime factors (3 factors, 193.5 bits, 0.01144790% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
169025397082148824391343.1422871823
109 × 26347
-109263471.114e-60.00010.0002
1690253161581776436884914731932373.7754779810372674532
22 × 3 × 13 × 10429 × 2937943243
2020-02-101042929379432431,575.610.92420.401
16902531130655174391012024535932476.58233446329466387932
22 × 13807 × 605604574969
2019-04-161380760560457496917,3872,251.64,205.4

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
169025315686706067354974627776163441495772736116.917
1690253109766433909294858451983190484815332737119.724
1690253182693271615655630816903877716039099078603244946150.356
169025317736255384205785255230368647349797540861096744071
774263111
59193.499
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:18:46alpertronManual testing5000001500000012-
skipped known factor: 9708214882439
--0.088--5.020%


Trial Factoring results:
No TF results for M1690253


ECM factoring results:

Old Calculation Method

Total ECM effort:15.445 GHz-days
Estimated T-Level:24.643
DigitsB1CurvesCompleteFacMiss
2011000260 / 1002.6007.331%
2550000260 / 2800.92939.446%

New Calculation Method

Total ECM effort:15.445 GHz-days
Estimated T-Level:24.643
DigitsB1CompleteFacMiss
20110008.3870.023%
25500000.75846.859%
302500000.04795.439%
3510000000.00299.786%


ECM Summary

B1B2factorcurvesGHz-days
500005000000281.663
50000500000023113.72
50000500000010.059


Lucas-Lehmer results:
No L-L results for M1690253


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T01:51:03Oliver KruseGTX-1
9708214882439
D517FCBDF3163F__no
2017-11-03T10:33:42kkmrkkblmbrbkc4.xlarge
9708214882439
D517FCBDF3163F__no
2019-04-17T07:49:28artorollofourth
9708214882439
113065517439101202453593
AE1B334CD48434ECno
2019-04-19T03:54:51arnaudstm-11-010
9708214882439
113065517439101202453593
AE1B334CD48434ECno
2020-02-11T08:35:08Jinyuan WangManual testing
9708214882439
16158177643688491473193
113065517439101202453593
AE1B334CD48434ECno
2020-02-11T08:36:17oodairacom1
9708214882439
16158177643688491473193
113065517439101202453593
AE1B334CD48434ECno


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2020-02-11T08:36:17+00:00