is 2 201596491 - 1
has 60686591 decimal digits
takes 1,720.220 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
Actual277151.828963.6364 %9397928193703.00001.7333 %154.828864.2666 %
Target279607.318164.5570 %1200000250000000182.56493.9666 %789.883065.9629 %
Difference-2-455.4892-0.9206 %-1106021-247180630-179.5650-2.2334 %-635.0542-1.6962 %

Known prime factors (1 factor, 68.1 bits, 0.00003377% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2015964913126914759572147752312168.083775537992765
32 × 5 × 65419 × 263443
2020-03-14654192634430.29570.94291.6473

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-03-14GdSManual testing313269397806--1.0000.715%
2020-03-14GdSManual testing6265318795906--2.0001.088%
2020-03-14GdSManual testing939792819370622168.0833.0001.351%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-05-01sasaki32642650.019
2013-07-16sasaki3mate_ma12652660.037
2014-11-14laleraManual testing2662670.074
2014-12-07laleraManual testing2672680.148
2016-12-08SADMASTERManual testing2682690.297
2016-12-08SADMASTERManual testing2692700.593
2019-09-21Chabot PrimeCC39182702711.186
2020-03-14GdSManual testing2712722.372
2020-03-14GdSManual testing2722734.745
2020-03-14GdSManual testing2732749.489
2020-03-14GdSManual testing27427518.98
2020-03-14GdSManual testing27527637.96
2020-03-14GdSManual testing27627775.91


ECM factoring results:
No ECM results for M201596491


Lucas-Lehmer results:
No L-L results for M201596491


PRP results:
No PRP results for M201596491


CERT results:
No CERT results for M201596491


P-1 factor-bounds graph:
B1 = 93979, B2 = 2819370 (P-1 stage 2)
B1 = 62653, B2 = 1879590 (P-1 stage 2)
B1 = 93979 (P-1 stage 1)
B1 = 31326, B2 = 939780 (P-1 stage 2)
B1 = 62653 (P-1 stage 1)
B1 = 31326 (P-1 stage 1)
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107
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
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266
265
this exponent TF target: 79
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00