4,320,139

1871 × 2309

Starting at 4,320,139, the Collatz iteration reaches 1 after 118 steps. The first transition is 12960418; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 1871 × 2309

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 4,324,320

Proper Divisor Sum 4,181

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #4320119 ← → #4320187

Radix Representation

Decimal	4320139
Binary	10000011110101110001011 (23 bits)
Octal	0o20365613
Hexadecimal	0x41EB8B

Divisor Catalog (4)

1 1,871 2,309 4,320,139

Collatz Trajectory (118 steps to reach 1)

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

4,320,139 12,960,418 6,480,209 19,440,628 9,720,314 4,860,157 14,580,472 7,290,236 3,645,118 1,822,559 5,467,678 2,733,839 8,201,518 4,100,759 12,302,278 6,151,139 18,453,418 9,226,709 27,680,128 13,840,064 6,920,032 3,460,016 1,730,008 865,004 432,502 216,251 648,754 324,377 973,132 486,566 243,283 729,850 364,925 1,094,776 547,388 273,694 136,847 410,542 205,271 615,814 307,907 923,722 461,861 1,385,584 692,792 346,396 173,198 86,599 259,798 129,899 389,698 194,849 584,548 292,274 146,137 438,412 219,206 109,603 328,810 164,405

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