diff --git a/src/Warm-Ups/Prime Factors/main.tex b/src/Warm-Ups/Prime Factors/main.tex
deleted file mode 100755
index 4f5a400..0000000
--- a/src/Warm-Ups/Prime Factors/main.tex	
+++ /dev/null
@@ -1,34 +0,0 @@
-\documentclass[
-	solutions,
-	singlenumbering,
-	nopagenumber,
-	hidewarning
-]{../../../lib/tex/ormc_handout}
-\usepackage{../../../lib/tex/macros}
-
-\title{Warm-Up: Prime Factors}
-\uptitler{\smallurl{}}
-\subtitle{Prepared by Mark on \today.}
-
-\begin{document}
-
-	\maketitle
-
-	\problem{}
-	What proportion of integers have $2$ as their smallest prime factor?
-	% 1^2
-	\vfill
-
-
-	\problem{}
-	What proportion of integers have $3$ as their second-smallest prime factor?
-	% 1/6
-	\vfill
-
-
-	\problem{}
-	What is the median second-smallest prime factor?
-	% 37
-	\vfill
-
-\end{document}
\ No newline at end of file
diff --git a/src/Warm-Ups/Prime Factors/main.typ b/src/Warm-Ups/Prime Factors/main.typ
new file mode 100644
index 0000000..1e81933
--- /dev/null
+++ b/src/Warm-Ups/Prime Factors/main.typ	
@@ -0,0 +1,23 @@
+#import "@local/handout:0.1.0": *
+
+#show: handout.with(
+  title: [Warm-Up: Prime Factors],
+  by: "Mark",
+)
+
+#problem()
+What proportion of integers have $2$ as their smallest prime factor?
+#solution([$1 div 2$])
+#v(1fr)
+
+
+#problem()
+What proportion of integers have $3$ as their second-smallest prime factor?
+#solution([$1 div 6$])
+#v(1fr)
+
+
+#problem()
+What is the median second-smallest prime factor?
+#solution([37])
+#v(1fr)