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Old 2017-01-24, 16:04   #4
sweety439
 
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Nov 2016

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Also, for some k's:

Sierpinski:

k=65: unknown, continue to find...
k=129: conjectured base b=802, covering set: {7, 13, 337}, period=3
k=257: conjectured base b=380, covering set: {3, 7, 43, 61}, period=6
k=513: unknown, continue to find...

Riesel:

k=127: conjectured base b=8672, covering set: {3, 5, 17, 137}, period=8
k=255: conjectured base b=4952, covering set: {41, 61, 127}, period=4
k=511: conjectured base b=185324, covering set: {3, 137, 953}, period=4
k=1023: conjectured base b=718, covering set: {7, 13, 61}, period=3
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