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Factor a 60-digit semiprime
open
DEMO
60-digit semiprime (solvable in minutes) Statement. Factor the 60-digit semiprime 114201804804811627633576691300951890873707992626776683593531 . Solution…
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Any nontrivial factor of M1277 = 2^1277 − 1
open
M1277 — any nontrivial factor (open) Statement. Find any nontrivial divisor of M_{1277} = 2^{1277} - 1 (385 digits). No factor is known; it is the smallest…
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Factor RSA-260
listed
RSA-260 (solved 2026-09-03 — demo of a live ask) Statement. Find the two prime factors of RSA-260 (260 digits, 862 bits), the largest RSA Challenge number…
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