is 2 164800901 - 1
has 49610015 decimal digits
takes 1,081.506 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
Actual2725.803061.1111 %2500002500002.37891.6136 %8.181961.7386 %
Target278371.457464.1026 %1000000180000000102.31593.9120 %473.773365.5069 %
Difference-6-365.6544-2.9915 %-750000-179750000-99.9370-2.2984 %-465.5914-3.7683 %

Known prime factors (1 factor, 90.6 bits, 0.00005496% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
16480090118525434684550510198272682792890.5825620550182717299039
32 × 7 × 421 × 6571 × 103573 × 311371
2011-06-041035733113711,521,4941.09332.0058

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-05-28Never Odd Or EvenLii_____dddddl2500025000--0.2380.148%
2011-05-29Never Odd Or EvenLii_____dddddl5000050000--0.4760.262%
2011-05-31Never Odd Or Even383_tf_787500075000--0.7140.353%
2011-05-31Never Odd Or Even383_tf_78100000100000--0.9520.430%
2011-06-02Never Odd Or Even383_tf_78250000250000--2.3790.749%
2011-06-04Never Odd Or Even383_tf_782890.5824.7580.000%


Trial Factoring results:
57585960616263646566676869707172737475767778
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-07-03sasaki3MATE_J2632640.012
2011-02-09runeskts012642650.023
2011-05-25Never Odd Or EvenLii_____dddddl2652660.045
2011-05-26Never Odd Or EvenLii_____dddddl2662670.091
2011-05-26Never Odd Or EvenLii_____dddddl2672680.181
2011-05-26Never Odd Or EvenLii_____dddddl2682690.363
2011-05-26Never Odd Or EvenAldi2692700.726
2011-05-31Never Odd Or EvenP154512702711.451
2011-05-31Never Odd Or EvenManual testing2712722.902


ECM factoring results:
No ECM results for M164800901


Lucas-Lehmer results:
No L-L results for M164800901


PRP results:
No PRP results for M164800901


CERT results:
No CERT results for M164800901


P-1 factor-bounds graph:
B1 = 250000 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 75000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 25000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
this exponent TF target: 78
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00