is 2 2007517 - 1
has 604323 decimal digits
takes 0.132 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L1A8AF5558564583Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26714.801368.6567%500000150000000.12305.1254%14.924370.2632%1.6065%
PrimeNet2580.019163.7931%90001500000.00162.6089%0.020764.7377%0.9446%
GPU722620.306066.1290%80001100000.00131.2376%0.307366.5482%0.4192%
Difference+5+14.4953+2.5277%+492000+14890000+0.1217+3.8877%+14.6170+3.7149%+3.7149%

Known prime factors (1 factor, 67.7 bits, 0.00337381% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
20075172447565517848480722172167.73060960019712124
22 × 3 × 13 × 157 × 359 × 6933083
2009-09-05359693308322.2270.03600.0673

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-04-28T00:00:00Jocelyn Larouchev4_computers20002000---0.000--0.022%
2002-05-05T00:00:00Jocelyn Larouchev4_computers30003000---0.000--0.040%
2003-01-16T00:00:00ANONYMOUSv4_computers30000547500---0.006--1.424%
2003-11-16T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.273%
2016-03-17T19:19:28alpertronManual testing5000001500000012-
skipped known factor: 244756551784848072217
--0.123--5.125%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-26T00:00:00ANONYMOUSv4_computers21258--0.019--
2022-03-09T07:16:45LordJuliusManual testing21260--0.077--
2009-01-02T19:34:00Sturle Sundebruch.ifi260261--0.077--


ECM factoring results:

Old Calculation Method

Total ECM effort:4.043 GHz-days
Estimated T-Level:2.300
DigitsB1CurvesCompleteFacMiss
201100046 / 1000.46062.982%
255000046 / 2800.16484.825%

New Calculation Method

Total ECM effort:4.043 GHz-days
Estimated T-Level:2.300
DigitsB1CompleteFacMiss
20110001.81316.313%
25500000.16784.610%
302500000.01198.948%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
500005000000252.116
50000548838270.616
50000555000070.619
50000709158370.693


Lucas-Lehmer results:
No L-L results for M2007517


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T20:46:42Oliver KruseGTX-1
244756551784848072217
17161FE90E2356__no
2017-11-13T09:56:48ATHec2-1xf
244756551784848072217
17161FE90E2356__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 30000, B2 = 547500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 3000 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
261
260
258
250
260
270
280
290
2100
Last modified: 2022-08-03T06:40:16+00:00