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BigInt
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Surge
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BigInt

π 2022 Day 11 Solutions π
For part 2, I immediately had the suspicion that using BigInts wasn't going to cut it, and that was quickly confirmed by the CPU usage. I then wasted time with lcm before noticing that all divisors are primes and thus a simple reduce(1, *) was sufficient.

BigInt initialize with bytes
Also FYI there is this package if you donβt want to use a beta implementation. Hope that a BigInt type gets added to the standard lib tho, I ran into this problem just this week!
 How to store 18446744073709551616 in an UInt?
What are some alternatives?
Upsurge  Multidimensional Swift math
swiftpons  ProtocolOriented Number System in Pure Swift
SwiftMathEagle  A general math framework to make using math easy. Currently supports function solving and optimisation, matrix and vector algebra, complex numbers, big int, big frac, big rational, graphs and general handy extensions and functions.
iosMath  Beautiful math equation rendering on iOS and MacOS
Arithmosophi  A set of protocols for Arithmetic, Statistics and Logical operations
Metron  Geometry, simplified.
SwiftMath
Euler  Swift Custom Operators for Mathematical Notation
Expression  A crossplatform Swift library for evaluating mathematical expressions at runtime
SigmaSwiftStatistics  A collection of functions for statistical calculation written in Swift.