For BGV or BFG scheme,

In library examples, the `plaintextModulus`

was set as 65537 or 2.

I was trying to set different `plaintextModulus`

such as some prime near 2^4, 2^6 , 2^{20}, but that will lead to a fail while doing the `MakePackedPlaintext`

,

```
p = 61
m = 16384
log2 q = 180
KenGen Finished
terminate called after throwing an instance of 'lbcrypto::math_error'
what(): /home/aluji/openfhe-development/src/core/lib/math/nbtheory.cpp:294 Please provide a primeModulus(q) and a cyclotomic number(m) satisfying the condition: (q-1)/m is an integer. The values of primeModulus = 61 and m = 16384 do not satisfy this condition
Aborted (core dumped)
```

I tried to fix it by `setRingDim`

but small RingDim seems also not acceptable.

I can only use `MakeCoefPackedPlaintext`

if I need to use small or extra large plaintextModulus for now, but `MakeCoefPackedPlaintext`

can not support SIMD mult (maybe it can, I just also don’t know how) which makes it slow.

So I’m asking about the parameter choice, extremely about `plaintextModulus`

and packing method.

I read the Standard – Homomorphic Encryption Standardization but it only emphasis on `n`

and ciphertext modulus.

Thanks!