530

[Tech.]  BMW (Bayerische Motoren Werke) cars’ numbered models currently: 325 (328, 323), 330, 525, 530, 650, 750 and 760. (Not completed list)

 

[World]  The ISO-3166 country code for Netherlands Antilles.

 

531

[Tech.]   The “number system” code of an EAN-13 barcode for Macedonia’s products.

 

[Math.]   A pan-digital factorization: 291,548,736 = 8×92×531×746. 

It is still true to add one digit 0 on both sides of the equality.

 

532

[Phone]   The emergency telephone numbers dialing within Spain are 061 and 532.

 

[Sport]  One of soccer’s possible lineup tactics formations: 5-3-2 (5 defenders, 3 midfielders and 2 forwards). A slightly modified defenders line makes: 1-4-3-2 (1 sweeper), or 4-1-3-2 (1 stopper). A slightly modified defenders line makes: 5-3-1-1 (1 striker).

 

533

[Library]  ISBN-0-533 is the International Standard Book Number for books published by Vantage Press.

 

[World]  The ISO-3166 country code for Aruba.

 

534

[Library]  ISBN-0-534 is the International Standard Book Number for books published by Wadsmorth Publishing Company.

 

535

[Calendar]  The first Roman calendar was introduced in the year 535 BC, having 10 months, with 304 days a year, beginning in March.

 

[Math.]  5353 = 3493+3793+3833, sum of 3 cube powers of prime numbers.

 

[Tech.]  The “number system” code of an EAN-13 barcode for Malta’s products.

 

536…

 

537

[Gov.]  In the 2000 U.S. presidential election, George W. Bush defeated Al Gore by 537 votes in the state of Florida: Bush 2,912,790 votes vs. Gore 2,912,253 votes.

 

538

[Gov.]  The current number of U.S. Presidential electoral votes in the U.S. electoral college: 538 = 100 (number from Senate) + 435 (number from House of Representatives) + 3 (number from Washington D.C.).

 

539

[Tech.]  The “number system” code of an EAN-13 barcode for Ireland's products.

 

530-539

[Library]  Numbers 500-599 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Pure Sciences (Mathematics, Astronomy and Chemistry…). Numbers 530-539 are for books in Physics.