Rayan Test, (309, ?) was a mathematician in Jerusalem.
Rayan believed in Yazdanism.
Financially, he was well under average. He had struggles to meet ends every other week. He was considered as belonging to the lowest caste. However, he made some friends among it. People saw Rayan as cultivated, eager to read and learn when possible, and mastering writing, which he did for friends. He was force of nature, and people saw in their body and beauty the incarnation of a god. He was iron-willed, achieving any goal he set.