is 2 1695899 - 1
has 510517 decimal digits
takes 0.080 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
Actual26717.521068.6567 %500000150000000.08805.0223 %17.609170.2309 %
Target2610.181165.5738 %70005000000.00231.3006 %0.183466.0215 %
Difference+6+17.3399+3.0829 %+493000+14500000+0.0857+3.7217%+17.4256+4.2093 %

Known prime factors (4 factors, 284.2 bits, 0.01675669% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
169589919332938080893111650.780569990845
5 × 719 × 158551
-7191585510.00010.00060.0011
16958991150485752696550102012166.64133919642404900
22 × 32 × 52 × 72 × 19 × 40481731
2018-03-03494048173112.7140.15050.2811
16958991208578989852886309676092476.67835632398800072596
22 × 313 × 33749 × 843295577
2023-01-133374984329557710,3453.13755.8559
169589913067470715082006055224712632890.078385266773406966041469
3 × 389 × 2297 × 7283 × 19734194057
2023-01-13728319734194057249,909,75873.371137.04

11 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-17alpertronManual testing5000001500000012
skipped known factor: 1933293808089311
---8.792%


Trial Factoring results:
5758596061626364656667
No TF results for M1695899


ECM factoring results:
Total ECM effort:35.665 GHz-days
Estimated T-Level:25.719
DigitsB1CompleteFacMiss
201100014.9000.000%
25500001.69118.436%
302500000.14486.599%
3510000000.01099.010%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025717.50
50000500000030.178
25000040000000269.55
25000040000000114.039
25000040000000124.406


Lucas-Lehmer results:
No L-L results for M1695899


PRP results:
dateuseridcompidcofactorsres64
2017-09-30alpertronManual testing
1933293808089311
08F3ACFB84EA9BA8
2017-10-18Oliver KruseThreadripper-PC
1933293808089311
08F3ACFB84EA9BA8
2018-03-08Oliver KruseGTX-3
1933293808089311
115048575269655010201
D48F548E816B64F0
2018-03-08kkmrkkblmbrbkc5.xlarge
1933293808089311
115048575269655010201
D48F548E816B64F0
2023-01-13Naegi Makoto5950X
1933293808089311
115048575269655010201
120857898985288630967609
1306747071508200605522471263
D48F548E816B64F0


CERT results:
dateuseridcompid
2023-01-13curtiscot014080


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.72 ~= 69-bit
250
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290
2100
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Last modified: 2024-03-13T02:15:48+00:00