Thread: Other Primes
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Old 2021-09-11, 10:44   #258
Batalov
 
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

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Cool

Quote:
Originally Posted by paulunderwood View Post
Congrats to Serge and Ryan for the two smallest known Mega primes, prove with CHG at 28.7% factored of N+1
Two largest known less-than-Mega primes, actually.
(The second one was found before search was called off, an incidental finding. )

Code:
...
10^999999+308267*10^292000+1 	P    1000000  Batalov          02/2021
10^999999+593499	        PRP  1000000  Peter Kaiser     02/2013
10^999999                    	C    1000000  --- a composite, smallest million-digit number
10^999999-172473	        PRP   999999  Patrick De Geest 12/2016
10^999999-1022306*10^287000-1	P     999999  Propper,Batalov  09/2021
10^999999-1087604*10^287000-1	P     999999  Propper,Batalov  09/2021
...
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