Quadrillion

One quadrillion (10^15) is one thousand trillions or one million billions. A quadrillion seconds is about 31.7 million years.

A quadrillion is where numbers start to feel genuinely alien. 10^15 is so far beyond human experience that even analogies strain to convey it. A quadrillion seconds takes you back to the early Oligocene epoch, when the ancestors of modern horses were the size of dogs.

Real-world quadrillions: the number of ants estimated to be alive on Earth at any given time is about 10 quadrillion (10^16). Global internet traffic in 2025 is estimated at about 5.3 zettabytes per year, where a zettabyte is 10^21 bytes (a million quadrillion bytes). A petabyte (10^15 bytes) is a quadrillion bytes, the amount of data that large companies process daily.

In computing, PFLOPS (petaFLOPS, 10^15 floating-point operations per second) measures supercomputer performance. The world's fastest supercomputers operate in the exaFLOPS range (10^18), a thousand times beyond quadrillion-scale.

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BillionOne billion (1,000,000,000) is 10^9, or one thousand millions. A billion seconds is about 31.7 years.GoogolA googol is 10^100 (1 followed by 100 zeros). It far exceeds the number of atoms in the observable universe (~10^80).GoogolplexA googolplex is 10^googol, or 10^(10^100). It cannot be written out in full because it has more digits than atoms in the universe.InnumeracyInnumeracy is the mathematical equivalent of illiteracy: the inability to understand and work with numbers and basic mathematical concepts.MillionOne million (1,000,000) is 10^6, or one thousand thousands. A million seconds is about 11.5 days.View all glossary terms