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Timeline for Large prime numbers in encryption?

Current License: CC BY-SA 3.0

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Sep 21, 2016 at 11:10 comment added fgrieu In the context of cryptography based on integer factorization, 299993 (which is 20-bit) is a small prime, and has been so since at least the 1960s. In the present century, large never started before 250 bits, and ECM has been used to pull factors of about that size.
Sep 20, 2016 at 13:53 history edited e-sushi CC BY-SA 3.0
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Sep 20, 2016 at 12:11 history edited tylo CC BY-SA 3.0
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Sep 20, 2016 at 0:38 answer added Stephen Touset timeline score: 7
Sep 19, 2016 at 23:15 history edited yyyyyyy
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Sep 19, 2016 at 23:13 review First posts
Sep 20, 2016 at 12:11
Sep 19, 2016 at 23:12 history asked Joe CC BY-SA 3.0