## Search found 37 matches

### Prime numbers

For how many natural numbers \$n\$, both \$n\$ and \$(n -6)^2 + 1\$ are prime?
Thu Dec 14, 2017 8:54 pm

Forum: Number Theory
Topic: Prime numbers
Replies: 2
Views: 43

### Re: Yet divisibility...

Ok, thanks aritra!!
Wed Dec 13, 2017 11:18 pm

Forum: Number Theory
Topic: Yet divisibility...
Replies: 6
Views: 405

### Re: Yet divisibility...

Wed Dec 13, 2017 8:07 pm

Forum: Number Theory
Topic: Yet divisibility...
Replies: 6
Views: 405

### Re: Yet divisibility...

Sat Nov 11, 2017 4:08 pm

Forum: Number Theory
Topic: Yet divisibility...
Replies: 6
Views: 405

### Re: Yet divisibility...

Sat Oct 14, 2017 10:48 pm

Forum: Number Theory
Topic: Yet divisibility...
Replies: 6
Views: 405

### Re: IMO \$2017\$ P\$1\$

Mon Oct 02, 2017 3:00 pm

Topic: IMO \$2017\$ P\$1\$
Replies: 4
Views: 577

### Re: IMO \$2017\$ P\$1\$

Fri Sep 15, 2017 3:11 am

Topic: IMO \$2017\$ P\$1\$
Replies: 4
Views: 577

### Re: Yet divisibility...

Wed Sep 06, 2017 6:04 pm

Forum: Number Theory
Topic: Yet divisibility...
Replies: 6
Views: 405

### Re: a+b+c>=1/a+1/b+1/c

Someone?
Wed Sep 06, 2017 6:02 pm

Forum: Algebra
Topic: a+b+c>=1/a+1/b+1/c
Replies: 1
Views: 432

### Re: Sequence and divisibility

Thanks tanmoy.
Wed Sep 06, 2017 5:52 pm

Forum: Algebra
Topic: Sequence and divisibility
Replies: 2
Views: 299
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