diff --git a/sources/print_number.c b/sources/print_number.c
new file mode 100644
index 0000000..539f346
--- /dev/null
+++ b/sources/print_number.c
@@ -0,0 +1,96 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   print_number.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/09/18 15:00:27 by rparodi           #+#    #+#             */
+/*   Updated: 2025/09/19 16:06:27 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_printf.h"
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int	flag_p(va_list args, int fd)
+{
+	char		*to_print;
+	int			to_ret;
+	u_int64_t	number;
+
+	number = va_arg(args, unsigned long long);
+	to_ret = 0;
+	if (number != 0)
+		to_ret += write(fd, "0x", 2);
+	else if (number == 0)
+		return (write(fd, "(nil)", 5));
+	to_print = itoa_base(number, "0123456789abcdef");
+	to_ret += write(fd, to_print, ft_strlen(to_print));
+	free(to_print);
+	return (to_ret);
+}
+
+int	flag_x_maj(va_list args, int fd)
+{
+	char			*to_print;
+	int				to_ret;
+	unsigned int	number;
+
+	number = va_arg(args, unsigned int);
+	to_print = itoa_base(number, "0123456789ABCDEF");
+	to_ret = write(fd, to_print, ft_strlen(to_print));
+	free(to_print);
+	return (to_ret);
+}
+
+int	flag_x(va_list args, int fd)
+{
+	char			*to_print;
+	int				to_ret;
+	unsigned int	number;
+
+	number = va_arg(args, unsigned int);
+	to_print = itoa_base(number, "0123456789abcdef");
+	to_ret = write(fd, to_print, ft_strlen(to_print));
+	free(to_print);
+	return (to_ret);
+}
+
+int	flag_u(va_list args, int fd)
+{
+	char			*to_print;
+	int				to_ret;
+	unsigned int	number;
+
+	to_ret = 0;
+	number = va_arg(args, unsigned int);
+	to_print = itoa_base(number, "0123456789");
+	to_ret = write(fd, to_print, ft_strlen(to_print));
+	free(to_print);
+	return (to_ret);
+}
+
+int	flag_i(va_list args, int fd)
+{
+	char	*to_print;
+	int		number;
+	int		to_ret;
+
+	to_ret = 0;
+	number = va_arg(args, int);
+	if (number < 0)
+	{
+		if (number == INT_MIN)
+			return (write(1, "-2147483648", 11));
+		number = -number;
+		to_ret += write(1, "-", 1);
+	}
+	to_print = itoa_base(number, "0123456789");
+	to_ret += write(fd, to_print, ft_strlen(to_print));
+	free(to_print);
+	return (to_ret);
+}
diff --git a/sources/utils.c b/sources/utils.c
index 0dc8f27..a23288b 100644
--- a/sources/utils.c
+++ b/sources/utils.c
@@ -11,6 +11,9 @@
 /* ************************************************************************** */
 
 #include <stddef.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 size_t	ft_strlen(const char *str)
 {
@@ -23,3 +26,79 @@ size_t	ft_strlen(const char *str)
 		i++;
 	return (i);
 }
+
+void	*ft_memset(void *s, int c, size_t n)
+{
+	char	*str;
+	size_t	i;
+
+	i = 0;
+	str = (char *)s;
+	while (i < n)
+	{
+		str[i] = c;
+		i++;
+	}
+	return (str);
+}
+
+void	*ft_calloc(size_t nmemb, size_t size)
+{
+	size_t	total;
+	char	*to_return;
+
+	if (nmemb == 0 || size == 0)
+		return ((void *)malloc(1));
+	total = nmemb * size;
+	if (total / nmemb != size && total / size != nmemb)
+		return (NULL);
+	to_return = (char *)malloc(total);
+	if (to_return == NULL)
+		to_return = NULL;
+	else
+		ft_memset(to_return, 0, nmemb * size);
+	return (to_return);
+}
+
+static size_t	ft_nbrlen(u_int64_t nbr, size_t base_len)
+{
+	size_t	len;
+
+	if (nbr == 0)
+		return (1);
+	len = 0;
+	while (nbr > 0)
+	{
+		nbr /= base_len;
+		len++;
+	}
+	return (len);
+}
+
+char	*itoa_base(u_int64_t nbr, char *base)
+{
+	size_t	base_len;
+	size_t	nbr_len;
+	char	*result;
+	int		i;
+
+	if (!base)
+		return (NULL);
+	base_len = ft_strlen(base);
+	if (base_len < 2)
+		return (NULL);
+	nbr_len = ft_nbrlen(nbr, base_len);
+	result = malloc(sizeof(char) * (nbr_len + 1));
+	if (!result)
+		return (NULL);
+	i = nbr_len - 1;
+	if (nbr == 0)
+		result[0] = base[0];
+	while (nbr > 0)
+	{
+		result[i] = base[nbr % base_len];
+		nbr /= base_len;
+		i--;
+	}
+	return (result);
+}