Error "exponent has no digits"

Hi, I need help in my project. I want to upload a sketch and there is an error. The problem is that that sketch was copied from a web and I only changed the variables that were necesary to change. The problem is in the line 74, the line were I have to put the UID of my card for my RFID sensor. If I write in the UID gap “10000000”, I can compilate the sketch and there is no problem but, when I change that default UID to my UID, I can´t compilate the sketch. The errror shown is “exponent has no digits” and the code is:

#include <SPI.h>
#include <MFRC522.h>
#define SDA_pin 10
#define RESET_pin 9
// Alarm strobe
int alarmLight = 5;
// Screamer or horn
int alarmRelay = 8;
// Valid card indicator
int cardOkLight = 4;
// Entry/exit indicator
int armLight = 2;
// LED flash variable, 0 is off, 1 is on
int pulseOn = 0;
// PIR sensor
int zone1 = 7;
// alarm status, 1 = disarmed, 2 = exiting, 3 = entering, 4 = armed
int alarm_state = 1;
// Counter for entry and exit time when arming and disarming
int entryExitLimit = 10;
int entryExit = 0;
// Counter to turn alarm siren off
int alarmCountLimit = 60;
int alarmCount = 0;

MFRC522 mfrc522(SDA_pin, RESET_pin);

void setup()
{
pinMode(cardOkLight, OUTPUT);
pinMode(armLight, OUTPUT);
pinMode(alarmLight, OUTPUT);
pinMode(alarmRelay, OUTPUT);
pinMode(zone1, INPUT);
Serial.begin(9600);
SPI.begin();
mfrc522.PCD_Init();
}

// Get the UID number from the reader output
unsigned long getCardUID(){
if ( ! mfrc522.PICC_ReadCardSerial()) {
return -1;
}
unsigned long card_num;
card_num = (uint32_t)mfrc522.uid.uidByte[0] << 24;
card_num += (uint32_t)mfrc522.uid.uidByte[1] << 16;
card_num += (uint32_t)mfrc522.uid.uidByte[2] << 8;
card_num += (uint32_t)mfrc522.uid.uidByte[3];
mfrc522.PICC_HaltA(); // Stop reading
return card_num;
}

void loop() {
// Check if card is present, get UID number and compare to white-listed numbers
if (mfrc522.PICC_IsNewCardPresent()) {
unsigned long uid = getCardUID();
if(uid != -1){
if (uid == 69EF4DA2 || uid == 19D84A98) {
digitalWrite(cardOkLight, HIGH);
Serial.print("Valid card, UID: ");
Serial.println(uid);
// If alarm_state is disarmed, start exit-timer for arming
if (alarm_state == 1) {
alarm_state = 2;
entryExit = entryExitLimit;
Serial.println(“Exiting”);
}
// Disarm apon valid card
else {
digitalWrite(armLight, LOW);
alarm_state = 1;
entryExit = 0;
alarmCount = 0;
Serial.println(“Disarmed”);
}
delay(1000);
}
else {
digitalWrite(armLight, HIGH);
Serial.print(“Invalid card, UID: “);
Serial.println(uid);
// Pause to allow card indicator LED to show
delay(1000);
}
Serial.println(”_”);
}

}
// Manage indicator LEDs
else {
digitalWrite(cardOkLight, LOW);
if (entryExit == 0 && alarm_state != 4) { // If not armed
digitalWrite(armLight, LOW);
}
if (alarmCount == 0 && alarm_state != 5) { // If not in alarm
digitalWrite(alarmLight, LOW);
}
}
delay(1000);
// Check entry and exit counters and react
if (entryExit > 0) {
if (entryExit == 1 && alarm_state == 2) { // End exit countdown, arm system
alarm_state = 4; // Armed
entryExit = 0;
digitalWrite(armLight, HIGH);
Serial.println(“System armed”);
}
else if (entryExit == 1 && alarm_state == 3) { // Entry time expired, activate alarm
alarm_state = 5;
Serial.println(“ALARM!!!”);
alarmCount = alarmCountLimit;
entryExit = 0;
digitalWrite(alarmLight, HIGH);
}
else { // Control flashing Exit/Entry indicator LED
Serial.println(entryExit);
if (pulseOn == 1) {
digitalWrite(armLight, LOW);
pulseOn = 0;
}
else {
digitalWrite(armLight, HIGH);
pulseOn = 1;
}
entryExit–;
}

}
// If system is in alarm, manage flashing alarm light and horn
if (alarmCount > 0) {
Serial.println(alarmCount);
if (pulseOn == 1 && alarmCount > 1) {
digitalWrite(alarmLight, LOW);
digitalWrite(alarmRelay, LOW);
pulseOn = 0;
}
else {
digitalWrite(alarmLight, HIGH);
digitalWrite(alarmRelay, HIGH);
pulseOn = 1;
}
if (alarmCount == 1) { // Set alarm to silent, leave alarm LED solid
digitalWrite(alarmLight, HIGH);
digitalWrite(alarmRelay, LOW);
Serial.println(“Silent”);
}
alarmCount–;
}

// Check PIR sensors for movement if armed and start entry counter
if (alarm_state == 4 && digitalRead(zone1) == HIGH) {
entryExit = entryExitLimit;
pulseOn = 1;
alarm_state = 3;
digitalWrite(alarmLight, HIGH);
}

}

Thanks in advance

if (uid == 69EF4DA2 || uid == 19D84A98)

You are trying to compare the value of uid with 2 Hex numbers but have expressed them incorrectly. Hex numbers are denotes with a prefix of 0x so try this

if (uid == 0x69EF4DA2 || uid == 0x19D84A98)

Please edit your post to add code tags, as described in How to use this forum.