195 (number)

195 (one hundred [and] ninety-five) is the natural number following 194 and preceding 196.

← 194 195 196 →
← 190 191 192 193 194 195 196 197 198 199 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred ninety-five
Ordinal	195th (one hundred ninety-fifth)
Factorization	3 × 5 × 13
Greek numeral	ΡϞΕ´
Roman numeral	CXCV, cxcv
Binary	110000112
Ternary	210203
Senary	5236
Octal	3038
Duodecimal	14312
Hexadecimal	C316

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

• 195 (disambiguation)