1 files changed, 2 insertions, 2 deletions
diff --git a/bignum.c b/bignum.c
index d6c25b1a2f..552648c631 100644
--- a/bignum.c
+++ b/bignum.c
@@ -636,7 +636,7 @@ rb_big2str0(x, base, trim)
     switch (base) {
       case 2: break;
       case 3:
-	j = j * 647L / 1024;
+	j = j * 53L / 84 + 1;
 	break;
       case 4: case 5: case 6: case 7:
 	j /= 2;
@@ -645,7 +645,7 @@ rb_big2str0(x, base, trim)
 	j /= 3;
 	break;
       case 10: case 11: case 12: case 13: case 14: case 15:
-	j = j * 241L / 800 + 1;
+	j = j * 28L / 93 + 1;
 	break;
       case 16: case 17: case 18: case 19: case 20: case 21:
       case 22: case 23: case 24: case 25: case 26: case 27: