Current Events > What is the smallest prime factor of (111)! - 1 ?

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FLOUR 06/20/22 5:53:14 PM #1:	Yes, that's 111 factorial minus 1. And yes, it's composite. Anyone up to the task? And for an easier question, what are the possible positive integers n such that (2^n)-1 and (2^n)+1 are both prime? --- OK, so what am I doing? Oh, I'm chasing this guy? No, he's chasing me... <cite>FLOUR posted [p:965969867] in What is th... [t:80064816]...</cite> <quote>Yes, that's 111 factorial minus 1. And yes, it's composite. Anyone up to the task? And for an easier question, what are the possible positive integers n such that (2^n)-1 and (2^n)+1 are both prime? </quote> ... Copied to Clipboard!
NeonOctopus 06/20/22 5:57:10 PM #2:	n=1 for that last question --- http://i.imgur.com/nlaY1qH.jpg http://i.imgur.com/zHJ1OCo.gif http://i.imgur.com/btBPP4E.jpg http://i.imgur.com/1B3bMHw.gif https://i.imgur.com/2aof3ao.jpg <cite>NeonOctopus posted [p:965969958] in What is th... [t:80064816]...</cite> <quote>n=1 for that last question </quote> ... Copied to Clipboard!
Damn_Underscore 06/20/22 5:58:46 PM #3:	Uh... 2 --- I don't wanna wait in vain for your love. <cite>Damn_Underscore posted [p:965969988] in What is th... [t:80064816]...</cite> <quote>Uh... 2 </quote> ... Copied to Clipboard!
Questionmarktarius 06/20/22 5:59:10 PM #4:	NeonOctopus posted... n=1 for that last question That gives 1 and 3, which doesn't work because 1 isn't prime n=2 gives 3 and 5, which does work. <cite>Questionmarktarius posted [p:965969998] in What is th... [t:80064816]...</cite> <quote>NeonOctopus posted... </cite> <quote>n=1 for that last question</quote>That gives 1 and 3, which doesn't work because 1 isn't prime n=2 gives 3 and 5, which does work. </quote> ... Copied to Clipboard!
NeonOctopus 06/20/22 6:00:46 PM #5:	Ugh, I just took discrete mathematical reasoning but I forget all that shit about composites and finding prime factors and gcd equations lol --- http://i.imgur.com/nlaY1qH.jpg http://i.imgur.com/zHJ1OCo.gif http://i.imgur.com/btBPP4E.jpg http://i.imgur.com/1B3bMHw.gif https://i.imgur.com/2aof3ao.jpg <cite>NeonOctopus posted [p:965970039] in What is th... [t:80064816]...</cite> <quote>Ugh, I just took discrete mathematical reasoning but I forget all that shit about composites and finding prime factors and gcd equations lol </quote> ... Copied to Clipboard!
Sariana21 06/20/22 6:36:14 PM #6:	Do your own homework. --- ___ Sari, Mom to DS (07/04) and DD (01/08); Pronouns: she/her/hers <cite>Sariana21 posted [p:965970892] in What is th... [t:80064816]...</cite> <quote>Do your own homework. </quote> ... Copied to Clipboard!
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