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location Italy
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Jun
21
comment number prime to $bc$ with system of congruences
Actually it was part of a problem that demonstrates that $\phi(bc)$ is equal to $\phi(b)$$\phi(c)$. That was suggested as a starting point for this demonstration, so I thought that all and only the solution of that system were prime to $bc$. But it seems false since your remark.
Jun
19
comment number prime to $bc$ with system of congruences
Thank you for your edit. I just fixed a typo. :)
Jun
19
revised number prime to $bc$ with system of congruences
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Jun
19
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Jun
19
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Jun
19
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Jun
19
accepted number prime to $bc$ with system of congruences
Jun
19
awarded  Editor
Jun
19
revised number prime to $bc$ with system of congruences
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Jun
19
comment number prime to $bc$ with system of congruences
Sorry both for my very basic math knowledge. And my bad english. Question modified, you both were right.
Jun
19
asked number prime to $bc$ with system of congruences