Program tells me error for having E in my HEX code

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so i'm trying use tv remote control remote controlled car , first problem hex value remote sends out 219e48b7...when put hex value in sketch (that hex value tells arduino perform function) error comes saying not find exponent "case 219e48b7". guess thinks e in hex value short exponent , looking number go it. there can change it?

it idea tell compiler number hex. 0x219e48b7

pete


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