is 2 1935763 - 1
has 582723 decimal digits
takes 0.105 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
Actual26715.350068.6567%500000150000000.10155.1030%15.451570.2562%1.5994%
PrimeNet2580.019863.7931%80001400000.00122.4633%0.021064.6850%0.8919%
GPU722620.317466.1290%8000900000.00101.1513%0.318466.5190%0.3900%
Difference+5+15.0326+2.5277%+492000+14910000+0.1005+3.9517%+15.1331+3.7372%+3.7372%

Known prime factors (3 factors, 148.6 bits, 0.00767898% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
193576330972209824.8848
23
-881.157e-126.293e-71.281e-6
1935763206575808333494091754.1985335772208
24 × 3 × 13 × 23 × 371779
2014-11-09233717790.00130.00160.0030
19357638732458736251265408872169.565225555988420361
225555988420361
2021-02-14122555598842036175.859966,6771,805,483

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
19357636398109110048920655744812479.082
1935763270463537063050068757992093832994.449
19357631803914722179987422568436385839578578338123.762
193576355871223793535506069160928545428068199030464745148.647
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:41:07alpertronManual testing5000001500000012-
skipped known factor: 30972209
skipped known factor: 20657580833349409
--0.101--5.103%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-11-09T12:43:00TJAOIManual testing254255*54.198176.11821e-50.2310.000


ECM factoring results:

Old Calculation Method

Total ECM effort:21.003 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:21.003 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110009.0860.011%
25500000.80744.609%
302500000.05095.118%
3510000000.00299.770%


ECM Summary

B1B2factorcurvesGHz-days
500005000000271.877
500005000000100.695
50000700000070.565
50000750000021417.87


Lucas-Lehmer results:
No L-L results for M1935763


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:24:13alpertronManual testing
30972209
20657580833349409
FE8ECDC15AF0F5__no
2017-10-20T08:18:14Oliver KruseThreadripper
30972209
20657580833349409
FE8ECDC15AF0F5__no
2021-02-14T16:50:38mrhw
30972209
20657580833349409
873245873625126540887
025AFD6CFDB81378no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
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105
106
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TF factor-bounds graph:
267
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230
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2100
Last modified: 2022-03-17T11:24:21+00:00