diff --git a/io.go b/io.go
new file mode 100644
index 0000000..34c727f
--- /dev/null
+++ b/io.go
@@ -0,0 +1,56 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+)
+
+func loadPrimes() []int64 {
+	return loadPrimesTxt()
+}
+
+func loadPrimesTxt() []int64 {
+	file, err := os.Open("prime.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var primes []int64
+
+	scanner := bufio.NewScanner(file)
+
+	for scanner.Scan() {
+		nextPrime, err := strconv.ParseInt(scanner.Text(), 10, 64)
+		if err != nil {
+			log.Fatal(err)
+		}
+		primes = append(primes, nextPrime)
+	}
+
+	file.Close()
+
+	return primes
+}
+
+func writePrimes(primes []int64) {
+	writePrimesTxt(primes)
+}
+
+func writePrimesTxt(primes []int64) {
+	file, err := os.Create("prime.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	writer := bufio.NewWriter(file)
+
+	for _, prime := range primes {
+		writer.WriteString(fmt.Sprintf("%d\n", prime))
+	}
+
+	writer.Flush()
+	file.Close()
+}
diff --git a/main.go b/main.go
index 4bb4cf8..2e92787 100644
--- a/main.go
+++ b/main.go
@@ -1,15 +1,14 @@
 package main
 
 import (
-	"bufio"
 	"context"
 	"flag"
 	"fmt"
 	"log"
-	"os"
 	"runtime"
 	"strconv"
 	"time"
+	"os"
 )
 
 func calculateProgress(start, end, step, index int64) float32 {
@@ -194,20 +193,7 @@ func main() {
 
 func onlyGenerate(number int64, dontLoad bool, numRoutines int, useTensors bool) {
 	primes := generatePrimes(number, !dontLoad, numRoutines, useTensors)
-
-	file, err := os.Create("prime.txt")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	writer := bufio.NewWriter(file)
-
-	for _, prime := range primes {
-		writer.WriteString(fmt.Sprintf("%d\n", prime))
-	}
-
-	writer.Flush()
-	file.Close()
+	writePrimes(primes)
 }
 
 func calculate(number int64, dontLoad bool, numRoutines int, useTensors bool) {
@@ -229,26 +215,3 @@ func calculate(number int64, dontLoad bool, numRoutines int, useTensors bool) {
 	print(" = ")
 	println(sum)
 }
-
-func loadPrimes() []int64 {
-	file, err := os.Open("prime.txt")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	var primes []int64
-
-	scanner := bufio.NewScanner(file)
-
-	for scanner.Scan() {
-		nextPrime, err := strconv.ParseInt(scanner.Text(), 10, 64)
-		if err != nil {
-			log.Fatal(err)
-		}
-		primes = append(primes, nextPrime)
-	}
-
-	file.Close()
-
-	return primes
-}