diff --git a/index.html b/index.html
index f17ac38..dbd9954 100644
--- a/index.html
+++ b/index.html
@@ -102,8 +102,8 @@
         </div>
         <div class="col-md-6">
             <div class="panel statistics">
-                <div>Difficulty: <span class="output" v-text="difficulty">1</span></div>
-                <div>Generated: <span class="output" v-text="count + (count === 1 ? ' address' : ' addresses')">0 addresses</span></div>
+                <div>Difficulty: <span class="output" v-text="formatNum(difficulty)">1</span></div>
+                <div>Generated: <span class="output" v-text="formatNum(count) + (count === 1 ? ' address' : ' addresses')">0 addresses</span></div>
                 <div>50% probability: <span class="output" v-text="probability50">0 addresses</span></div>
                 <div>Speed: <span class="output" v-text="speed + ' addr/s'">0 addr/s</span></div>
                 <div>Status: <span class="output" v-text="status">Waiting</span></div>
diff --git a/js/index.js b/js/index.js
index 6e4d6b8..a414c96 100644
--- a/js/index.js
+++ b/js/index.js
@@ -49,7 +49,7 @@ new Vue({
 			return this.inputError ? 'N/A' : computeDifficulty(this.input.prefix, this.input.checksum);
 		},
 		probability50: function () {
-			return this.inputError ? 'N/A' : Math.floor(Math.log(0.5) / Math.log(1 - (1 / this.difficulty))) + ' addresses';
+			return this.inputError ? 'N/A' : this.formatNum(Math.floor(Math.log(0.5) / Math.log(1 - (1 / this.difficulty)))) + ' addresses';
 		},
 		probability: function () {
 			return Math.round(10000 * computeProbability(this.difficulty, this.count)) / 100;
@@ -171,6 +171,9 @@ new Vue({
 				this.cores = cores;
 				this.threads = this.cores;
 			}
+		},
+		formatNum: function (num) {
+			return num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ' ');
 		}
 	},