Number:15 - Revision history

Keiji at 16:07, 26 April 2009

2009-04-26T16:07:36Z

← Older revision		Revision as of 16:07, 26 April 2009
Line 1:		Line 1:
-	'''15''' is the first [[magic number]] which is not also a [[prime number]]. However, this is because 15 = 2<sup>4</sup>-1, and the exponent 4 is not prime. The first non-prime magic number whose exponent is itself prime is in fact 2<sup>11</sup>-1 = [[~~2047~~]] = [[23]] × [[89]].	+	'''15''' is the first [[magic number]] which is not also a [[prime number]]. However, this is because 15 = 2<sup>4</sup>-1, and the exponent 4 is not prime. The first non-prime magic number whose exponent is itself prime is in fact 2<sup>11</sup>-1 = [[2,047]] = [[23]] × [[89]].

-	15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[~~65535~~]] and the fifth is [[way too freaking big]] to write here.	+	15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[65,535]] and the fifth is [[way too freaking big]] to write here.

	{{Numbers\|Magic numbers}}		{{Numbers\|Magic numbers}}

Keiji: fix

2009-04-26T16:06:33Z

fix

← Older revision		Revision as of 16:06, 26 April 2009
Line 1:		Line 1:
-	'''15''' is the first [[magic number]] which is not also a [[prime number]]. However, this is because 15 = 2<sup>4</sup>-1, and the exponent 4 is not prime. The first magic number whose exponent is ~~not~~ itself prime is in fact 2<sup>11</sup>-1 = [[2047]] = [[23]] × [[89]].	+	'''15''' is the first [[magic number]] which is not also a [[prime number]]. However, this is because 15 = 2<sup>4</sup>-1, and the exponent 4 is not prime. The first non-prime magic number whose exponent is itself prime is in fact 2<sup>11</sup>-1 = [[2047]] = [[23]] × [[89]].

	15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[65535]] and the fifth is [[way too freaking big]] to write here.		15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[65535]] and the fifth is [[way too freaking big]] to write here.

	{{Numbers\|Magic numbers}}		{{Numbers\|Magic numbers}}

Keiji at 01:09, 9 April 2009

2009-04-09T01:09:22Z

← Older revision		Revision as of 01:09, 9 April 2009
Line 3:		Line 3:
	15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[65535]] and the fifth is [[way too freaking big]] to write here.		15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[65535]] and the fifth is [[way too freaking big]] to write here.

-	{{Numbers}}	+	{{Numbers\|Magic numbers}}

Keiji: Created page with ''''15''' is the first magic number which is not also a prime number. However, this is because 15 = 2⁴-1, and the exponent 4 is not prime. The first magic numbe...'

2009-04-09T00:49:04Z

Created page with ''''15''' is the first magic number which is not also a prime number. However, this is because 15 = 24-1, and the exponent 4 is not prime. The first magic numbe...'

New page

'''15''' is the first [[magic number]] which is not also a [[prime number]]. However, this is because 15 = 24-1, and the exponent 4 is not prime. The first magic number whose exponent is not itself prime is in fact 211-1 = [[2047]] = [[23]] × [[89]].

15 is also the third [[tetramagic number]], and the last which is small enough to [[care]] about, as the fourth is [[65535]] and the fifth is [[way too freaking big]] to write here.

{{Numbers}}

Number:15 - Revision history

Keiji at 16:07, 26 April 2009

Keiji: fix

Keiji at 01:09, 9 April 2009

Keiji: Created page with ''''15''' is the first magic number which is not also a prime number. However, this is because 15 = 24-1, and the exponent 4 is not prime. The first magic numbe...'

Keiji: Created page with ''''15''' is the first magic number which is not also a prime number. However, this is because 15 = 2⁴-1, and the exponent 4 is not prime. The first magic numbe...'