Question

[Hang-shao]

Where

For the next step, one should be aware of a mathematical result known as Fermat's little theorem (FLT). FLT states that given any non-zero integer a and a prime number p then a raised to the power p-1 always results in a number pn + 1 where n is an integer.

What

This is a problem. What is n? FLT：a^p-1=p^(n+1)？Is it real FLT?

How

It should "any non-zero integer a and a prime number p then a raised to the power p-1 always results in anumber 1 mod p "

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[boland25]

@Hang-shao thanks for pointing this out. Can you show us where you came across this in the repo? thanks!

[boland25]

@Hang-shao ah I see it, its in the Readme of BGV_country_db_lookup, thanks!

[boland25]

@Hang-shao We are correcting the text to read like so....

For the next step, one should be aware of a mathematical result known as Fermat's little theorem (FLT). FLT implies that given any non-zero integer a and a prime number p, if a is not divisible by p then a^(p-1)-1 is an integer multiple of p. Or to put it another way, a^(p-1) modulo p equals 1. This is formally captured below. Using this result we can modify it slightly to produce a function f(x) as stated below.

[Hang-shao]

@boland25 My goodness, thank you I understand,， thanks again