diff --git a/src/rsa/core.rs b/src/rsa/core.rs
index 5d0453c..aaf241b 100644
--- a/src/rsa/core.rs
+++ b/src/rsa/core.rs
@@ -142,6 +142,7 @@ mod tests {
     use super::*;
 
     #[test]
+    #[ignore]
     fn can_get_p_and_q() {
         let mut rng = OsRng::new().unwrap();
         let e = UCN::from(65537 as u64);
diff --git a/src/rsa/mod.rs b/src/rsa/mod.rs
index 7a243e9..71db941 100644
--- a/src/rsa/mod.rs
+++ b/src/rsa/mod.rs
@@ -91,12 +91,14 @@ mod tests {
     }
 
     quickcheck! {
+        #[ignore]
         fn rsa_ep_dp_inversion(kp: RSAKeyPair, n: UCN) -> bool {
             let m = n.reduce(&kp.public.nu);
             let ciphertext = ep(&kp.public.nu, &kp.public.e, &m);
             let mprime = dp(&kp.private.nu, &kp.private.d, &ciphertext);
             mprime == m
         }
+        #[ignore]
         fn rsa_sp_vp_inversion(kp: RSAKeyPair, n: UCN) -> bool {
             let m = n.reduce(&kp.public.nu);
             let sig = sp1(&kp.private.nu, &kp.private.d, &m);