λ
Ratio Atlas

21,368,047

21368047
Deficient Odd Prime

21,368,047 factors as 21368047. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 203 steps.

Prime Factor Structure

Factorization String 21368047
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 21,368,048
Proper Divisor Sum 1
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #21368029 ← → #21368059

Radix Representation

Decimal 21368047
Binary 1010001100000110011101111 (25 bits)
Octal 0o121406357
Hexadecimal 0x1460CEF

Divisor Catalog (2)

Collatz Trajectory (203 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

21,368,047 64,104,142 32,052,071 96,156,214 48,078,107 144,234,322 72,117,161 216,351,484 108,175,742 54,087,871 162,263,614 81,131,807 243,395,422 121,697,711 365,093,134 182,546,567 547,639,702 273,819,851 821,459,554 410,729,777 1,232,189,332 616,094,666 308,047,333 924,142,000 462,071,000 231,035,500 115,517,750 57,758,875 173,276,626 86,638,313 259,914,940 129,957,470 64,978,735 194,936,206 97,468,103 292,404,310 146,202,155 438,606,466 219,303,233 657,909,700 328,954,850 164,477,425 493,432,276 246,716,138 123,358,069 370,074,208 185,037,104 92,518,552 46,259,276 23,129,638 11,564,819 34,694,458 17,347,229 52,041,688 26,020,844 13,010,422 6,505,211 19,515,634 9,757,817 29,273,452

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