[8×10^(3a)-1]/t^2≠m

yangchuanju

Known (probable) prime numbers
8×10^0-1 = 7 is prime.
8×10^1-1 = 79 is prime.
8×10^4-1 = 79999 is prime.
8×10^5-1 = 799999 is prime.
8×10^8-1 = 799999999 is prime.
8×10^10-1 = 7(9)10<11> is prime.
8×10^25-1 = 7(9)25<26> is prime.
8×10^49-1 = 7(9)49<50> is prime.
8×10^76-1 = 7(9)76<77> is prime.
8×10^128-1 = 7(9)128<129> is prime.
8×10^175-1 = 7(9)175<176> is prime.
8×10^238-1 = 7(9)238<239> is prime.
8×10^550-1 = 7(9)550<551> is prime.
8×10^796-1 = 7(9)796<797> is prime.
8×10^1219-1 = 7(9)1219<1220> is prime.
8×10^2012-1 = 7(9)2012<2013> is prime. (Ray Ballinger / OpenPFGW / February 17, 2000 )
8×10^2846-1 = 7(9)2846<2847> is prime. (Ray Ballinger / OpenPFGW / February 17, 2000 )
8×10^11336-1 = 7(9)11336<11337> is prime. (Harvey Dubner / Cruncher / December 1, 1994 )
8×10^21296-1 = 7(9)21296<21297> is prime. (Eric J. Sorensen / Proth.exe / September 16, 2001 )
8×10^49808-1 = 7(9)49808<49809> is prime. (Eric J. Sorensen / Proth.exe / January 3, 2002 )
8×10^74318-1 = 7(9)74318<74319> is prime. (Eric J. Sorensen / Proth.exe / September 1, 2004 )
8×10^236891-1 = 7(9)236891<236892> is prime. (David Broadhurst / Srsieve, NewPGen, LLR, OpenPFGW / November 6, 2010 )
8×10^608989-1 = 7(9)608989<608990> is prime. (David Broadhurst / Srsieve, NewPGen, LLR, OpenPFGW / May 25, 2011 )
8×10^1715905-1 = 7(9)1715905<1715906> is prime. (Ryan Propper / LLR / August 4, 2020 )