123456

One hundred twenty-three thousand four hundred fifty-six
	123456
presentation
Roman	CXXIII CDLVI
dual	1 1110 0010 0100 0000
Octal	36 1100
Duodecimal	5 B540
Hexadecimal	1 E240
Morse code	- - - - · · - - - · · · - - · · · - · · · · - · · · ·
Mathematical properties
sign	positive
parity	straight
Factorization
Divider	1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 192, 643, 1286, 1929, 2572, 3858, 5144, 7716, 10288, 15432, 20576, 30864, 41152, 61728, 123456, 41152, 61728, 123456

The whole number or sequence of numbers 123456 results from the first six natural numbers (according to the definition without the zero). It is therefore the sixth Smarandache number in the decimal system .

Password 123456

According to several lists, it is the most frequently used password globally and throughout Germany. At least 23.3 million hacked user accounts were protected with this. The number sequences 12345, 1234567, 12345678 and 123456789 are among the most frequently used passwords.

Before that, "123456" was mostly used similar to a wildcard name . A song by the band Fitz and the Tantrums also has the episode as its title.

Individual evidence

↑ ^a ^b Most hacked passwords revealed as UK cyber survey exposes gaps in online security. National Cyber Security Center , April 21, 2019, accessed May 26, 2019 .
↑ The Most Common Passwords of 2016. Keeper Security Inc. , accessed May 26, 2019 .
↑ ^a ^b The Top 50 Worst Passwords of 2018. SplashData, Inc., accessed May 26, 2019 .
↑ The top ten German passwords. Hasso Plattner Institute , December 18, 2018, accessed on May 26, 2019 .
↑ The most popular German passwords in 2019. Hasso Plattner Institute, December 18, 2019, accessed on December 18, 2019 .
↑ corpus matches for "123456" from the aggregated reference and newspaper corpus . , In: Digital dictionary of the German language , accessed on June 14, 2019.
^ Angie Martoccio: Inside Fitz and the Tantrums' New Single '123456' . In: rollingstone.com , March 22, 2019, accessed June 23, 2019.

[ncsc-1] Most hacked passwords revealed as UK cyber survey exposes gaps in online security. National Cyber Security Center , April 21, 2019, accessed May 26, 2019 .

[2] The Most Common Passwords of 2016. Keeper Security Inc. , accessed May 26, 2019 .

[splash-3] The Top 50 Worst Passwords of 2018. SplashData, Inc., accessed May 26, 2019 .

[4] The top ten German passwords. Hasso Plattner Institute , December 18, 2018, accessed on May 26, 2019 .

[5] The most popular German passwords in 2019. Hasso Plattner Institute, December 18, 2019, accessed on December 18, 2019 .

[6] corpus matches for "123456" from the aggregated reference and newspaper corpus . , In: Digital dictionary of the German language , accessed on June 14, 2019.

[7] Angie Martoccio: Inside Fitz and the Tantrums' New Single '123456' . In: rollingstone.com , March 22, 2019, accessed June 23, 2019.