The term primary account number refers to a 14-, 15-, 16-, or even up to 19-digit number that serves as a unique identifier on credit cards, debit cards, and other types of payment cards.

Thankfully, there are ways to obtain a credit card in the U.S., even if you don’t have a Social Security number. The alternative to a Social Security number ...

The mean number sent out ranged from 11 to 149, averaging out to about 68, though many cards were addressed to couples or families. About 21 percent of cards were sent to family members.

Cost: Memberships to send ecards or print cards at home start at $6.99 a month (or $29.99 for a year or $339.99 for two years); free 7-day trial (requires credit card for trial) ...