diff --git a/src/libraries/System.Runtime.Numerics/tests/BigInteger/cast_from.cs b/src/libraries/System.Runtime.Numerics/tests/BigInteger/cast_from.cs
index d6343326642bda..3caf827da7bb4f 100644
--- a/src/libraries/System.Runtime.Numerics/tests/BigInteger/cast_from.cs
+++ b/src/libraries/System.Runtime.Numerics/tests/BigInteger/cast_from.cs
@@ -722,7 +722,7 @@ private static void DoubleExplicitCastFromLargeBigIntegerTests(int startShift, i
 
                 for (int j = 0; j < bigShiftLoopLimit; j++)
                 {
-                    temp = temp << (int.MaxValue / 10);
+                    temp = temp << (1 << 24);
                     VerifyDoubleExplicitCastFromBigInteger(double.PositiveInfinity, temp);
                     VerifyDoubleExplicitCastFromBigInteger(double.NegativeInfinity, -temp);
                 }
diff --git a/src/libraries/System.Runtime.Numerics/tests/BigInteger/log.cs b/src/libraries/System.Runtime.Numerics/tests/BigInteger/log.cs
index 37cae18d6c85c2..3f3edd0778c73e 100644
--- a/src/libraries/System.Runtime.Numerics/tests/BigInteger/log.cs
+++ b/src/libraries/System.Runtime.Numerics/tests/BigInteger/log.cs
@@ -157,11 +157,11 @@ private static void LargeValueLogTests(int startShift, int bigShiftLoopLimit, in
 
                 for (int j = 0; j<bigShiftLoopLimit; j++)
                 {
-                    temp = temp << (int.MaxValue / 10);
+                    temp = temp << (1 << 24);
                     double expected =
                         (double)startShift +
                         smallShift * (double)(i + 1) +
-                        (int.MaxValue / 10) * (double)(j + 1);
+                        (1 << 24) * (double)(j + 1);
                     Assert.True(ApproxEqual(BigInteger.Log(temp, logbase), expected));
                 }