Zsigmondy numbers: Difference between revisions
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(→{{header|ALGOL 68}}: Notes...) |
(→{{header|ALGOL 68}}: Slight optimisation) |
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Line 105:
INTEGER d := 1;
INTEGER max d := isqrt( an minus bn );
WHILE ( d +:= 1 ) <= max d AND largest divisor <= max d DO
IF an minus bn MOD d = 0 THEN
# d is a divisor of a^n - b^n #
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