John D. Cook • 1/14/2026

Efficiently computing multiple modular inverses at once

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This technical article details Montgomery's trick, an algorithm for computing multiple modular inverses simultaneously to save time compared to individual calculations. It explains the mathematical principle, provides a practical Python implementation using a large Mersenne prime, and demonstrates a significant performance improvement, highlighting its common use in cryptography.

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#Python #cryptography #modular arithmetic
Efficiently computing multiple modular inverses at once

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