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Old 2020-10-10, 20:10   #1
Viliam Furik
 
"Viliam Furík"
Jul 2018
Martin, Slovakia

1BE16 Posts
Default Repunit exponent mersenne numbers

I have TFed following repunit exponents to respective bit levels:

REP(19) -> 89 bits (18 bits above k=1)
REP(23) -> 100 bits (~27 bits above k=1)
REP(317) -> 1070 bits (20 bits above k=1)

For REP(23) I found a factor 5246666666666666666666614201, 92.083 bits, k = 236100.

Has there been a search for factors of these numbers already?
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