Unisex pullover hoodie - Perfect Numbers, Imperfect Us?
Unisex pullover hoodie - Perfect Numbers, Imperfect Us?
Unisex pullover hoodie - Perfect Numbers, Imperfect Us?
Unisex pullover hoodie - Perfect Numbers, Imperfect Us?
Unisex pullover hoodie - Perfect Numbers, Imperfect Us?
Unisex pullover hoodie - Perfect Numbers, Imperfect Us?
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Unisex pullover hoodie - Perfect Numbers, Imperfect Us?

Regular price
$61.00
Sale price
$61.00
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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

This hoodie is so comfy and practical, it'll become your everyday favorite. It's extra soft and has convenient side pockets. Made from organic cotton and recycled polyester, it's the perfect eco-friendly choice.

• 85% organic ring-spun combed cotton, 15% recycled polyester
• Fabric weight: 8.85 oz/yd² (300 g/m²)
• Brushed sweatshirt
• Medium fit
• Raglan sleeves
• Self-fabric double-layered hood
• Slanted side pockets
• Matching round drawcords with metal tipping and eyelets
• Flatlock topstitch on all seams
• 1×1 rib at sleeves and bottom hems
• Inside self-fabric tape at the back of the neck
• Self-fabric half moon at the back of the neck


Note that we show the EU sizes for Stanley/Stella products. The sizes correspond to a smaller size in the US market, so US customers should order a size up.

Size guide

  S M L XL 2XL
Chest Width (inches) 20 ¼ 21 ¼ 22 ⅜ 23 ⅝ 24 ¾
Body Length (inches) 26 ¾ 28 ¼ 29 ⅛ 29 ⅞ 30 ¾
Sleeve Length (inches) 29 ½ 31 ⅛ 31 ¾ 32 ¼ 32 ⅞
  S M L XL 2XL
Chest Width (cm) 52 54 57 60 63
Body Length (cm) 68 72 74 76 78
Sleeve Length (cm) 75 79 81 82 84

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”