diff --git a/Makefile b/Makefile
index 5da844a..5eb5c12 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ LEXER_C = src/lexer/lex.yy.c
 LEXER_H = src/lexer/lex.yy.h
 
 CFILES = $(shell find src -name '*.c')
-CFLAGS = -lm -lcjson -lgc -Wall -Wextra -Wno-unused-function -s
+CFLAGS = -lm -lcjson -lgc -lgmp -Wall -Wextra -Wno-unused-function -s
 BINARY = bin/argon
 
 all: $(BINARY)
diff --git a/src/memory.c b/src/memory.c
index 4c2c5d4..733ac12 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -1,9 +1,28 @@
 #include "memory.h"
 #include <gc.h>
+#include <gc/gc.h>
+#include <gmp.h>
 #include <stdlib.h> // for malloc/free (temp arena fallback)
 #include <string.h>
 
-void ar_memory_init() { GC_INIT(); }
+
+void *gmp_gc_realloc(void *ptr, size_t old_size, size_t new_size) {
+    (void)old_size;  // Ignore old_size, Boehm doesn't need it
+    return GC_realloc(ptr, new_size);
+}
+
+
+void gmp_gc_free(void *ptr, size_t size) {
+    (void)size;  // Boehm GC manages this itself
+    // No-op — memory will be collected automatically
+    GC_FREE(ptr);
+}
+
+void ar_memory_init() {
+  GC_INIT();
+  mp_set_memory_functions(GC_malloc, gmp_gc_realloc, gmp_gc_free);
+}
+
 
 void *ar_alloc(size_t size) { return GC_MALLOC(size); }
 
diff --git a/src/parser/number/number.c b/src/parser/number/number.c
new file mode 100644
index 0000000..37218b4
--- /dev/null
+++ b/src/parser/number/number.c
@@ -0,0 +1,14 @@
+#include "number.h"
+#include "../../lexer/token.h"
+#include "../parser.h"
+#include <stdlib.h>
+#include <gmp.h>
+
+ParsedValue *parse_number(Token *token) {
+  ParsedValue *parsedValue = malloc(sizeof(ParsedValue));
+  mpz_t *number = malloc(sizeof(mpz_t));
+  mpz_init_set_str(*number, token->value, 10);
+  parsedValue->type = AST_NUMBER;
+  parsedValue->data = number;
+  return parsedValue;
+}
\ No newline at end of file
diff --git a/src/parser/number/number.h b/src/parser/number/number.h
new file mode 100644
index 0000000..768314a
--- /dev/null
+++ b/src/parser/number/number.h
@@ -0,0 +1,11 @@
+// parser.h
+
+#ifndef NUMBER_H
+#define NUMBER_H
+#include "../parser.h"
+#include "../../lexer/token.h"  // for Token
+
+// Function declaration for parsing an identifier
+ParsedValue * parse_number(Token * token);
+
+#endif // NUMBER_H
\ No newline at end of file
diff --git a/src/parser/parser.c b/src/parser/parser.c
index 5b0ab8f..8c5bd3f 100644
--- a/src/parser/parser.c
+++ b/src/parser/parser.c
@@ -2,6 +2,7 @@
 #include "../dynamic_array/darray.h"
 #include "../lexer/token.h"
 #include "assign/assign.h"
+#include "number/number.h"
 #include "identifier/identifier.h"
 #include "string/string.h"
 #include <stdbool.h>
@@ -10,7 +11,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-const char *ValueTypeNames[] = {"string", "assign", "identifier"};
+const char *ValueTypeNames[] = {"string", "assign", "identifier", "number"};
 
 ParsedValue *parse_token(char *file, DArray *parsed, DArray *tokens,
                          size_t *index, bool inline_flag) {
@@ -64,9 +65,18 @@ ParsedValue *parse_token(char *file, DArray *parsed, DArray *tokens,
   case TOKEN_ASSIGN_PLUS:
   case TOKEN_ASSIGN_SLASH:
   case TOKEN_ASSIGN_STAR:
-    fprintf(stderr, "%s:%u:%u error: syntax error\n", file, token->line,
-            token->column);
+    if (parsed->size == 0) {
+      fprintf(stderr, "%s:%u:%u error: syntax error\n", file, token->line,
+              token->column);
+      exit(EXIT_FAILURE);
+    }
+    ParsedValue *assigning_to = darray_get(parsed, parsed->size-1);
+    fprintf(stderr, "%s:%u:%u error: cannot assign to %s\n", file, token->line,
+              token->column, ValueTypeNames[assigning_to->type]);
     exit(EXIT_FAILURE);
+  case TOKEN_NUMBER:
+    (*index)++;
+    return parse_number(token);
   default:
     fprintf(stderr, "Panic: unreachable\n");
     exit(EXIT_FAILURE);
@@ -96,5 +106,7 @@ void free_parsed(void *ptr) {
   case AST_ASSIGN:
     free_parse_assign(parsed);
     break;
+  case AST_NUMBER:
+    break;
   }
 }
\ No newline at end of file
diff --git a/src/parser/parser.h b/src/parser/parser.h
index 80916b0..68d9c0e 100644
--- a/src/parser/parser.h
+++ b/src/parser/parser.h
@@ -10,7 +10,8 @@ typedef struct LinkedList LinkedList;
 typedef enum {
   AST_STRING,
   AST_ASSIGN,
-  AST_IDENTIFIER
+  AST_IDENTIFIER,
+  AST_NUMBER,
 } ValueType;
 
 extern const char* ValueTypeNames[];
diff --git a/test.ar b/test.ar
index 70e857d..52ab0e7 100644
--- a/test.ar
+++ b/test.ar
@@ -1 +1 @@
-"hello world"=10
\ No newline at end of file
+x=10
\ No newline at end of file