You forgot Discover, the digit is 6. Another interesting tidbit is that the AmEx card number is 15 digits long vs. 16 for the other issuers.

The perl module Business::CreditCard [1] can convert the number to the card type. Very handy & lots of arcana built into that:

return "VISA card" if $number =~ /^4\d{12}(\d{3})?$/o;
return "MasterCard" if $number =~ /^5[1-5]\d{14}$/o;
return "Discover card" if $number =~ /^6011\d{12}$/o;
return "American Express card" if $number =~ /^3[47]\d{13}$/o;
return "Diner's Club/Carte Blanche"
if $number =~ /^3(0[0-5]|[68]\d)\d{11}$/o;
return "enRoute" if $number =~ /^2(014|149)\d{11}$/o;
return "JCB" if $number =~ /^(3\d{4}|2131|1800)\d{11}$/o;
return "BankCard" if $number =~ /^56(10\d\d|022[1-5])\d{10}$/o;
return "Switch"
if $number =~ /^49(03(0[2-9]|3[5-9])|11(0[1-2]|7[4-9]|8[1-2])|36[0-9]{2})\d{10}(\d{2,3})?$/o
|| $number =~ /^564182\d{10}(\d{2,3})?$/o
|| $number =~ /^6(3(33[0-4][0-9])|759[0-9]{2})\d{10}(\d{2,3})?$/o;
return "Solo"
if $number =~ /^6(3(34[5-9][0-9])|767[0-9]{2})\d{10}(\d{2,3})?$/o;
return "Unknown";

Useful?

[1] http://search.cpan.org/~ivan/Business-CreditCard-0.28/CreditCard.pm

More news you can't use.... unless you are looking for a good program manager or tech writer.

Okay, Here's my absolutely shameless plea for some good resume attention. Trying to get the attention of Microsoft. Is it working? :)

Seems like I read about all kinds of exciting projects and have even gotten to come in and test a few. I'd love to come work where I love to play.

Thanks for any suggestions or consideration!

http://www.geocities.com/jjswanson_mgr

Here is some telephone trivia. The same persists
in case of telephone numbers also.

Here in India, MTNL numbers start with the digit 2
Hughes Telecom numbers start with the digit 5.

The numbers also specify the areas.

The trend follows in case of cellular phone numbers also.

The starting 2 numbers indicate the Service Provider ( the nos. are fixed for each of them and their respective area, i.e. circle of operation also )

I don't know if i would call this info "news", but its definately information that's helpful to someone.

Want to get better attention to your resume? Use HTML TEXT not IMAGES. Search engine optimization tip # 104

Amusing info. I'm a banker and I didn't know that. lol.