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No!! Set(M) is Indefinite Leave to Remain (ILR) or Permanent Residence.Once I apply set(m) I will hold set(m) for 5 years. Is that what you mean?
Once you have ILR if you are married to a British citizen.If so then when can I apply my citizenship?
Yes, ILR and you can apply no sooner than within 28 days before the 5th anniversary of the date you ENTERED the UK in 2013 (you don't state what date that was).