Thread: probable dud
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Old 2020-08-31, 17:36   #10
CRGreathouse
 
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Aug 2006

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Quote:
Originally Posted by enzocreti View Post
Pg(69660) is prime


69660 is multiple of 215 and congruent to 215 mod 323...it is also 6 mod 13... using wolphram numbers of this form are 69660+xn where x i don't remember what it is.

69660 is the least number N such that N is 215 mod 323, N is 0 mod 215 and N is 6 mod 13...
then you have other values using Chinese remainder theorem
I agree that 69660 == chinese([Mod(215,323), Mod(0,215), Mod(6,13)]), and I'm prepared to assume that Pg(69660) is prime. But why should that make us think that

((2^1875230-1)*10^564501+2^1875229-1)

is likely to be prime?
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