Do you remember your mobile phone number by-heart?

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I know many of family members and friends who do not remember their own phone number by-heart. This includes my parents. I certainly remember my primary mobile phone number, which is also my WhatsApp number. But since I travel to different parts of the world during my sea voyages, I have different SIM cards from different countries, and I cannot remember them all - so I save them on my phone as "self (name of the country)".