exists and is an alternate of . 1 microgram is 0.000001 gram or 1 gram is 1000000 micrograms. Scroll down to related links and look at Weight and mass conversion.
Report Abuse. The major Credit cards (Visa Mastercard) almost always have 16 digits. The number will be less than 16 if the card is from a department store or gas station. CupCake Â· 8 years ago.
American Express card numbers. For American Express cards, the number is always 15 digits long and it always starts with 34 or 37. The 3rd and 4th digits indicate the card type (business vs. personal) and the currency.