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muna580
Mar10-07, 10:29 AM
How do I find out if 4^2007 + 2007^4 is a prime number or not?

arildno
Mar10-07, 11:48 AM
Is that a question or a puzzle?

JasonRox
Mar10-07, 06:11 PM
Write a program and let the computer figure it out. :biggrin:

robert Ihnot
Mar11-07, 04:25 AM
I will tell you, it's not prime; I don't want to say more.

mathwonk
Mar11-07, 08:08 PM
try using modular arithmetic. i.e. p divides N if N is congruent to 0 modp.

this is not speculation, this is a hint.