Laptop Sleeve - Perfect Numbers, Imperfect Us?
Laptop Sleeve - Perfect Numbers, Imperfect Us?
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Laptop Sleeve - Perfect Numbers, Imperfect Us?

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Design Backstory

Not Ed Sheeran’s purring out his Perfect lovesong but official eternal perfect numbers. These are numbers equal to the sum of their proper divisors, excluding themselves (eg 6 = 1+2+3, 28 = 1+2+4+7+14). Euclid found a general rule to find a perfect number for primes. If an integer k, if 2^k-1 is a prime then it generates a perfect number using the formula 2^(k-1) x (2^k -1). Another associated design includes a purrfect feline here.

More information outlining the perfect application of maths to our lives today can be found on this site link here

Protect your laptop with this snug, lightweight laptop sleeve! To prevent any scratch marks, it contains an internal padded zipper and its interior is fully lined with faux fur. What’s more, it’s made from a material that’s resistant to water, oil, and heat, making sure your laptop sleeve looks perfect everyday.


• 100% neoprene
• 13″ sleeve weight: 6.49 oz (220 g)
• 15″ sleeve weight: 8.8 oz (250 g)
• Lightweight and resistant to water, oil, and heat
• Snug fit
• Faux fur interior lining
• Top-loading zippered enclosure with two sliders
• Padded zipper binding

Size guide

  13 IN 15 IN
Length (inches) 13 ½ 14 ¾
Width (inches) 10 ½ 11 ¼
Height (inches)
  13 IN 15 IN
Length (cm) 34 37
Width (cm) 27 28
Height (cm) 2 2

Professor Brian Cox

“Science is too important not to be part of popular culture”

Prof Brian Cox

“On the way to the impossible we might find something eminently doable”Prof Brian Cox on summing up the endeavor science (fm The Infinite Monkey Cage – Extraterrestrial Life podcast, BBC Radio 4 7 Dec 2009)

Albert Einstein on Emmy Noether

“… the most significant creative mathematical genius thus far produced since the higher education of women began”

Peter Abelard, French Philsopher & logician

“Through doubting we are led to inquire, and by inquiring we perceive the truth”

Steve Jobs

“I think the biggest innovations of the twenty first century will be the intersection of biology and technology. A new era is beginning”