5

This number is a prime.

Just showing those entries submitted by 'Gupta': (Click here to show all)

+ 5 is the 5th digit in the decimal expansion of π = 3.1415.... [Gupta]

+ The only prime which is the difference of two prime squares. [Gupta]

+ The only prime digit in which a perfect square can end. [Gupta]

+ !5 - 1 is prime. Note that !5 represents subfactorial 5. [Gupta]

+ The only prime that is sandwiched between two semiprimes. [Gupta]

+ The floor function of e^phi = 5, where phi is golden ratio. [Gupta]

+ The largest known number (coincidentally prime) n such that n! is a triangular number. [Gupta]

+ SOUTH AMERICA is the only continent with all 5 vowels in its name. [Gupta]

+ 5 is the last digit to appear in decimal expansion of Golden ratio. [Gupta]

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