is 2 1914852941 - 1
has 576428173 decimal digits
takes 224,108.715 GHz-days to do one PRP test
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2680.031154.4118%----0.031154.4118%
Target28965,473.314765.1685%10000000440000000042,286.65194.1120%107,759.966566.6008%
Difference-21-65,473.2836-10.7568%-10000000-4400000000-42,286.6519-4.1120%-107,759.9354-12.1890%

Known prime factors (6 factors, 362.6 bits, 0.00001894% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
191485294112948810042924311650.202338115
3 × 5 × 22541
2013-09-165225418.113e-80.20920.3892
191485294132179907911740231651.515840271
107 × 7853
2019-07-1310778532.577e-70.08980.1357
191485294130432838330027698471961.400794652103
7 × 2801 × 40529
2020-03-212801405290.00030.82420.9674
1914852941711623628016626429432065.94818581678331
3 × 331 × 751 × 24917
2021-07-30751249170.00480.35090.4303
19148529411049783229044520863032166.50927411588811
107 × 1087 × 235679
2021-07-3010872356790.01272.35354.0699
19148529411491292415022361309032167.01538940129111
3 × 13 × 193 × 419 × 12347
2021-07-30419123470.01740.18140.2132

57 Composite Factors:
P-1 results:
No P-1 results for M1914852941


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-07-132125551.515162.50656e-6106,5065.24860e-6
2020-03-22slaurpalvi2-rtx2126461.400190.002106,5060.004
2021-07-30slaurpalvi2-rtx26426866.509210.029455,5300.060
2021-07-30slaurpalvi2-rtx26426867.015210.029455,5300.060
2021-07-30slaurpalvi2-rtx26426865.948200.029455,5300.060
Missing TF 68 - 69
Missing TF 69 - 70
Missing TF 70 - 71
Missing TF 71 - 72
Missing TF 72 - 73
Missing TF 73 - 74
2022-02-02ramgeisr4mg31s274275--1.998--
2022-04-01ramgeisr4mg31s275276--3.996--
2022-04-25ramgeisr4mg31s276277--7.992--


ECM factoring results:
No ECM results for M1914852941


Lucas-Lehmer results:
No L-L results for M1914852941


PRP results:
No PRP results for M1914852941


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
TF factor-bounds graph:
277
276
275
268
264
255
this exponent TF target: 89
250
260
270
280
290
Last modified: 2023-07-11T14:45:05+00:00