Math question: What is the sum of the prime factors of 145?

To find the prime factors of 145, we divide it by the smallest prime number, 2, which does not evenly divide it. Next, we try 3, and it also does not divide 145 evenly. Then, we try 5, and voila, it divides 145! We get 145 ÷ 5 = 29. Thus, the prime factors of 145 are 5 and 29. To find their sum, we add the two prime factors: 5 + 29 = 34. Therefore, the sum of the prime factors of 145 is 34.

Math question: If a number is divisible by 5 and ends with the digit 5, what is the remainder when it is divided by 6?

To find the remainder when a number is divided by 6, we look for patterns in the remainders when dividing by 6. Since 6 and 5 are relatively prime, we know that any number divisible by both 5 and 6 will also be divisible by their least common multiple, which is 30. Therefore, if a number is divisible by 5 and ends with 5, it is also divisible by 30 and leaves a remainder of 0 when divided by 6.

Math question: What is the smallest prime number greater than 145?

To find the smallest prime number greater than 145, we start by checking if 146 is prime. But, since it is divisible by 2, it is not prime. Moving on, 147 is divisible by 3, so it is not prime either. Similarly, 148 is divisible by 2, 3, and 4. Continuing this pattern, we find that 149 is the smallest prime number greater than 145. Prime numbers have only two distinct divisors: 1 and itself, which means they are not divisible by any other number. In this case, 149 satisfies this condition, making it the answer.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

145 (number)

145 is an odd 3-digits composite number following 144 and preceding 146. In scientific notation, it is written as 1.45 × 10^2. The sum of its digits is 10. It has a total of 2 prime factors and 4 positive divisors. There are 112 positive integers (up to 145) that are relatively prime to 145.

Interesting facts

145 has 4 divisors, whose sum is 180
The reverse of 145 is 541
Previous prime number is 29

Basic properties

Is Prime? no
Number parity odd
Number length 3
Sum of Digits 10
Digital Root 1

Name

Name	one hundred forty-five

Notation

Scientific notation	1.45 × 10^2
Engineering notation	1.45 × 10^0

Prime Factorization of 145

Prime Factorization 29 × 5

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	145	Product of the distinct prime numbers

The prime factorization of 145 is 29 × 5. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 10, 65, 9, 330, 588, 1600, 4907, 64185, 55204, 755792, 361287, 7349456, 3047533, 64471279, 6024611, 865639310, 95021260, 1697535927, 581571753

Basic calculations (n = 145)

Multiplication

n×y

n×2	290
n×3	435
n×4	580
n×5	725

Division

n÷y

n÷2	72.5
n÷3	48.333333333333
n÷3	36.25
n÷5	29

Exponentiation

n^y

n²	21025
n³	3048625
n⁴	442050625
n⁵	64097340625

Nth Root

^y√n

²√n	12.041594578792
³√n	5.2535878724929
⁴√n	3.4701000819562
⁵√n	2.7056623629641

Divisors of 145

1, 5, 29, 145

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-144	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 145 can be divided by 4 positive divisors. The sum of these divisors (counting 145) is 1, the average is 0.25.

Base conversion 145

Base	System	Value
2	Binary	10010001
3	Ternary	12101
4	Quaternary	2101
5	Quinary	1040
6	Senary	401
8	Octal	221
10	Decimal	145
12	Duodecimal	101
16	Hexadecimal	91
20	Vigesimal	75
36	Base36	41

Cryptographic Hash Functions

md5	2b24d495052a8ce66358eb576b8912c8
sha1	50336bc687eb161ee9fb0ddb8cf2b7e65bad865f
sha256	be47addbcb8f60566a3d7fd5a36f8195798e2848b368195d9a5d20e007c59a0c
sha512	d79eed4d59589be134262b0a945218d62a8f624409a6312a3b0d8ff4293794c06a5fe97ee98bae3188c233d3c39d5bf1bf9d06b5681e04e3faebe3db5055334d
ripemd-160	24879d90ddec86238792f073a9e2e6d8e03f85f1

145 as geometric shapes

Circle

Radius = n

Diameter	290
Circumference	911.06186954104
Area	66051.985541725

Sphere

Radius = n

Volume	12770050.538067
Surface area	264207.9421669
Circumference	911.06186954104

Square

Length = n

Perimeter	580
Area	21025
Diagonal	205.0609665441

Cube

Length = n

Surface area	126150
Volume	3048625
Space diagonal	251.14736709749

Equilateral Triangle

Length = n

Perimeter	435
Area	9104.0920572839
Altitude	125.57368354874

Triangular Pyramid

Length = n

Surface area	9104.0920572839
Volume	359283.90179914
Height	68.3536555147