bug in factor

[thofma]

@fieker Can you reproduce and know how to fix it?

julia> a = ZZ(65261404486168272596469055321032207458900347428758158658012236487063743080177113810110282680249226184903475017526897956542827985941267684646505051975441057446672916412353515625)
65261404486168272596469055321032207458900347428758158658012236487063743080177113810110282680249226184903475017526897956542827985941267684646505051975441057446672916412353515625

julia> for i in 1:10; f = factor(a); @show f[2430601]; end
f[2430601] = 4
f[2430601] = 2
f[2430601] = 2
f[2430601] = 2
f[2430601] = 2
f[2430601] = 4
f[2430601] = 4
f[2430601] = 2
f[2430601] = 2
f[2430601] = 2

julia> valuation(a, 2430601)
4

[lgoettgens]

smaller example:

julia> a = ZZ(15256904898765951040575460247493335266128960885722986287515593)

julia> julia> for i in 1:10; f = factor(a); @show f[2430601]; end
f[2430601] = 4
f[2430601] = 4
f[2430601] = 4
f[2430601] = 2
f[2430601] = 4
f[2430601] = 4
f[2430601] = 2
f[2430601] = 4
f[2430601] = 4
f[2430601] = 4

[thofma]

Fixed in #1610