Fermat

Fermat

Crypto

Challenge

So you only have the modulus, there is no way to factorize it is there?

Challenge by: Ariana

Hint

Fermat factorization

Solution

We are given N and C.

We see from the source code that the primes are close to each other.

We solve using fermat factorisation and then we can decrypt.

Flag

HATS{d0n7_u53_cl053_pr1m35}