29

Divisibility of 29Divisibility of 29:
Take away the last digit of the number, multiply it by 3, and add it to
the remaining digits. Repeat the process until the result can be determined.
Example: For the number 120,437,
1. Take the last digit of the number and multiply it by 2. (7 x 3 = 21)
2. Add that number to the rest of the digits. (12043 + 21 = 12064)
3. Repeat the process. (1206 + 4 x 3 = 1218)
4. Continue until the results can be determined. (121 + 8 x 3 = 145)
5. The result is should be divisible by 29. (14 + 5 x 3 = 29);

29
Basic Information
Cardinal Number	twenty-nine
Ordinal Number	twenty ninth
Roman Numeral	XXIX
Greek Numeral	ΚΘ´
Factorization	29
Standard Form	2.9 × 101
Different Representations
Binary Form	111012
Ternary Form	10023
Quaternary Form	1314
Quinary Form	1045
Senary Form	456
Septenary Form	417
Octal Form	358
Nonary Form	329
Undecimal Form	2711
Duodecimal Form	2512
Tridecimal Form	2313
Quattuordecimal Form	2114
Quindecimal Form	1E15
Hexadecimal Form	1D16
Septendecimal Form	1C17
Octodecimal Form	1B18
Novemdecimal Form	1A19
Vigesimal Form	1920
Unvigesimal Form	1821
Duovigesimal Form	1722
Trevigesimal Form	1623
Quattuorvigesimal Form	1524
Quinvigesimal Form	1425
Hexavigesimal Form	1326
Septenvigesimal Form	1227
Octovigesimal Form	1128
Novemvigesimal Form	1029
Trigesimal Form	T30
Untrigesimal Form	T31
Duotrigesimal Form	T32
Tretrigesimal Form	T33
Quattuortrigesimal Form	T34
Quintrigesimal Form	T35
Hexatrigesimal Form	T36
Previous	23
Current	29
Next	31

29 is a prime number from 1-100. 29 has 2 factors, 1 and 29. It is said to be another number wherein when digits are added together, they make a prime number. It is the tenth prime number, and the tenth prime number from 1-100.

Proofs

• — 29 can be divided by 1.

• — 29 cannot be divided by 2-28.

• — 29 can be divided by 29.

• Therefore 29 has 2 factors

Rela​tionship with other odd numbers

The numbers before

• The previous prime number is 23. The numbers in between are composite.
  • Among them, 25 is a square number, being 5² = 25.
  • 27 is a cube number, being 3³ = 27.
  • 23 and 29 are six numbers apart; therefore, they are sexy primes.

The numbers after

• The next odd number, 31, is a prime number.
  • There are no odd numbers between 29 and 31. As a result, they are twin primes.
• 33, the odd number following 31, is not a prime number. It is divisible by 3 and 11.
• 35, the odd number following 33, is also not a prime number. It is divisible by 5 and 7.

Prime Numbers 1-1,000