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The 9 Most Massive Numbers in Existence – No One’s Bank Balance is Even Close ! or maybe everyone’s balance !

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In fact, according to one astrophysicist who came up with a calculation for valuing planets, Earth is worth a bank-breaking $5 quadrillion dollars, unsurprisingly the priciest in the solar-system.

At a price of US$1,250 per troy ounce, reached on 16 August 2017, one ton of gold has a value of approximately US$40.2 million. The total value of all gold ever mined would exceed US$7.5 trillion at that valuation and using WGC 2017 estimates.

 

That's Huge!

Credit: Tim Nighswander/IMAGING4ART, courtesy of David Zwirner, New York (c) 2012 Doug Wheeler

That’s Huge!

Big numbers are everywhere, from the cells in the human body to the size of the universe. But once numbers edge past the realm of the physical, the human mind can struggle to grasp the sheer awesome scale of these numbers. Even infinity can seem easier to understand in comparison — it just goes on and on. And once numbers start to get large enough, everything starts to blur together, said Jon Borwein, an applied mathematician at the University of Newcastle in Australia.

“We don’t understand numbers on this scale,” Borwein said.

From the humble trillion to Graham’s number, here are some of the most mind-boggling numbers there are.

Big is relative

When thinking about a personal budget, a $16 trillion debt ceiling is pretty inconceivable. But on the scale of the atoms in the universe, it looks absolutely paltry in comparison, said Scott Aaronson, a computer scientist at MIT.

To try to understand huge numbers, most people rely on analogies of scale. For instance, Carl Sagan famously likened the age of the universe to a calendar year, with humans only showing up in the last few hours of New Year’s Eve.

Riemann Hypothesis

Credit: MclekShutterstock

Riemann Hypothesis

First stated in 1859, the Riemann hypothesis is one of the greatest unsolved conjectures of mathematics, and whoever solves it will nab a $1 million prize. “This is the biggest open question in mathematics, the one that will guarantee your name is known in 10,000 years,” Borwein said.

The hypothesis, if true, has important implications for the distribution of prime numbers, which aren’t divisible by anything other than themselves or one. To test the hypothesis, mathematicians look for extremely large primes — those bigger than about 10 raised to the power of 30, he said. That may sound abstract, but it has many real-world implications, Borwein said. “Primes are embedded in everything we use for encryption,” he said. “That all relies on stuff where the algorithms are designed using properties of primes that we think are true but don’t know.”

Universe

As far back as Archimedes, philosophers have wondered how many tiny particles could fit in the universe. Archimedes estimated that about 10 to the power of 63 grains of sand could fill the universe. He used a series of extremely rough estimates — the poppy seeds that make a grain of sand, the grains of sand that would cover the length of a stadium, and the stadia lengths between Earth and the sun, said Henry Mendell, a classical historian at California State University, Los Angeles.

Despite his crude measures, he wasn’t too far off. Current estimates put the total number of atoms in the universe at about 10 to the 80.Hercules and the Hydra

Credit: Shelburne Museum, Shelburne, Vermont

Hercules and the Hydra

Sometimes things have to get big before they get small. In 1982, mathematicians Jeff Paris and Laurie Kirby posed a riddle: Imagine Hercules fighting a Hydra that grows heads like a tree. If he cuts off one head, the mythic monster simply grows back a certain number of heads governed by a few rules. Amazingly, Hercules will always prevail against the Hydra eventually and chop off all of the Hydra’s heads.

But even if Hercules is clever and chooses the most efficient strategy, the Hydra will first grow more than a googolplex of heads (or 10 raised to the power of 10 raised to the 100 power).

Mersenne Prime

The Mersenne Primes are a class of numbers that get big in a hurry.  These prime numbers are equal to 2 raised to the power of a prime number minus 1. While the first few start out small — 3, 7, 31 — they blow up to become incredibly large extremely quickly. Until about 1951, only 12 of these primes were known, but by this year, 48 were known.

To power through these gigantic numbers, scientists use the Great Internet Mersenne Primes Search (GIMPS), which uses the computing power of thousands of Internet users to search for the elusive prime numbers. The largest known prime number, 2^57,885,161 – 1, has over 17 million digits and was discovered this year.

A Trillion Triangles

Around 1000 years ago, Persian mathematician Al Karaji first asked how many congruent numbers existed. But just what are congruent numbers? The numbers are the area of right-angle triangles with integer or fraction length sides. So a triangle with sides of length of 3,4 and 5 would have an area of ½ * 3*4 = 6, making 6 a congruent number.

It took another millennia before the first hundred congruent numbers were discovered. By 2009, however supercomputers had discovered the first 3,148,379,694 congruent numbers. Some of these numbers are so enormous that if their digits were written out in decimal form, they would stretch to the moon and back. Gigantic numbers have interesting implications in data storage, because they are so huge that a stray gamma ray could disrupt the bits in these numbers and make them wrong, Borwein said.Graham's Number

Credit: NASA’s Goddard Space Flight Center

Graham’s Number

All these numbers pale in comparison to Graham’s number, a number so large that simply trying to remember all the digits would turn your head into a black hole. The number, which at one point was the largest number to ever be used in a math proof, arose in response to a simple riddle about how to allocate people to a certain set of committees with a few constraints.

While mathematicians are confident that at least 13 people are needed to solve the problem, in the 1970s mathematician and juggler Ronald Graham deduced that the number of people had to be lower than Graham’s number. Simply computing the number would take 64 steps, and involves multiplying an insanely huge number of 3s.

There is no way to write the number out using scientific notation, and instead it must be written with a series of up-arrows that denote towers of exponents. Later on, Graham showed that the upper bound to for this riddle is much much smaller than Graham’s number, but still huge.

TREE(3)

While Graham’s number was one of the largest numbers proposed for a specific math proof, mathematicians have gone even bigger since then. In 1998 the logician Harvey Friedman of Ohio State University proposed a riddle asking how long a sequence of letters needs to be given certain parameters of repeating stretches of letters. While the answer isn’t infinite, it’s absolutely massive.

The number Friedman derived, TREE(3), is calculated by creating increasingly massive towers of twos raised to the power of two using something called Ackerman functions. To give a sense of the scale, the fourth Ackerman functions involves raising two to the power of 65,536 twos. But TREE(3) is massively, massively larger than that — so massive that it makes Graham’s number look like the tiniest fleck of dust in comparison.

“These higher levels of largeness blur, where one is unable to sense one level of largeness from another,” Friedman wrote in his paper.

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