195 (number)
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Template:Infobox number 195 (one hundred [and] ninety-five) is the natural number following 194 and preceding 196.
In mathematics
195 is:
- the sum of eleven consecutive primes: 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37
- the smallest number expressed as a sum of distinct squares in 16 different ways (sequence A097563 in the OEIS)
- a centered tetrahedral number
- in the middle of a prime quadruplet (191, 193, 197, 199).
See also
References
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