is 2 1750607 - 1
has 526986 decimal digits
takes 0.095 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
Actual26716.973568.6567%500000150000000.10155.0416%17.075070.2369%1.5802%
PrimeNet2570.011063.1579%80001400000.00122.8027%0.012264.1905%1.0326%
GPU722610.175565.5738%80001100000.00111.4128%0.176566.0601%0.4864%
Difference+6+16.7980+3.0829%+492000+14890000+0.1004+3.6288%+16.8984+4.1768%+4.1768%

Known prime factors (2 factors, 114.4 bits, 0.00653394% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17506072541064320700971547.85272576664
23 × 9072083
-890720831.322e-50.03890.0726
17506071066336937097181408972166.53130456205678864
24 × 72 × 38847201121
2018-03-19493884720112112.213166.49310.96

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
17506072709630744703202253698006202645700935114.384
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:29:16alpertronManual testing5000001500000012-
skipped known factor: 254106432070097
--0.101--5.042%


Trial Factoring results:
No TF results for M1750607


ECM factoring results:

Old Calculation Method

Total ECM effort:17.252 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:17.252 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110009.6540.006%
25500000.89340.933%
302500000.05694.522%
3510000000.00399.737%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025017.18
50000500000010.069


Lucas-Lehmer results:
No L-L results for M1750607


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T06:28:20Oliver KruseGTX-0
254106432070097
2672C808B9BEA0__no
2017-11-03T23:38:03Chang Chia-Tcheexbpc13
254106432070097
2672C808B9BEA0__no
2018-03-22T04:55:22Jack Rhys-Burgess
254106432070097
106633693709718140897
8231162A742E2D__no
2018-03-27T00:46:02krackerGRID-11
254106432070097
106633693709718140897
8231162A742E2D__no


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:
267
240
250
260
270
280
290
2100
Last modified: 2020-07-06T08:24:40+00:00