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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
this is a high-quality
Why is quantum mechanics like a broken pencil
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10% polyester
Photo paper poster - Purrfect Numbers, Imperfect Us? Engineering this is a high-qualityThis poster has a partly glossy, partly matte finish and it'll add a touch of perfect sophistication to any room. Design backstory: Not Ed Sheerans purring out his Perfect love song 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. For an integer k, if 2^k 1 is a prime then it generates
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