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.
The vast majority of MasterCard credit card numbers start with 5 and are 16-digit long, The credit card number must pass the Luhn Algorithm Check. Every MasterCard credit card has a specifically prefix like: 51, 52, 53, 54, 55. The prefix 2221-2720 is inactive now.