The factors of 1989 are: 1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989.
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pi is not a question so there was no answer to pi - in 1989, before 1989 or since.pi is not a question so there was no answer to pi - in 1989, before 1989 or since.pi is not a question so there was no answer to pi - in 1989, before 1989 or since.pi is not a question so there was no answer to pi - in 1989, before 1989 or since.
Calendar for 1989 can be found in calendarlabs.com
2017 - 1989 = 28
117
1989 was 23 years ago.