4,047,305

5 × 809461

Starting at 4,047,305, the Collatz iteration reaches 1 after 136 steps. The first transition is 12141916; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 809461

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 4,856,772

Proper Divisor Sum 809,467

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #4047301 ← → #4047317

Radix Representation

Decimal	4047305
Binary	1111011100000111001001 (22 bits)
Octal	0o17340711
Hexadecimal	0x3DC1C9

Divisor Catalog (4)

1 5 809,461 4,047,305

Collatz Trajectory (136 steps to reach 1)

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

4,047,305 12,141,916 6,070,958 3,035,479 9,106,438 4,553,219 13,659,658 6,829,829 20,489,488 10,244,744 5,122,372 2,561,186 1,280,593 3,841,780 1,920,890 960,445 2,881,336 1,440,668 720,334 360,167 1,080,502 540,251 1,620,754 810,377 2,431,132 1,215,566 607,783 1,823,350 911,675 2,735,026 1,367,513 4,102,540 2,051,270 1,025,635 3,076,906 1,538,453 4,615,360 2,307,680 1,153,840 576,920 288,460 144,230 72,115 216,346 108,173 324,520 162,260 81,130 40,565 121,696 60,848 30,424 15,212 7,606 3,803 11,410 5,705 17,116 8,558 4,279

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