8,398,643

11 × 763513

Starting at 8,398,643, the Collatz iteration reaches 1 after 243 steps. The first transition is 25195930; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 11 × 763513

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 9,162,168

Proper Divisor Sum 763,525

Digit Sum / Digital Root 41 (Root: 5)

Adjacent Primes #8398633 ← → #8398673

Radix Representation

Decimal	8398643
Binary	100000000010011100110011 (24 bits)
Octal	0o40023463
Hexadecimal	0x802733

Divisor Catalog (4)

1 11 763,513 8,398,643

Collatz Trajectory (243 steps to reach 1)

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

8,398,643 25,195,930 12,597,965 37,793,896 18,896,948 9,448,474 4,724,237 14,172,712 7,086,356 3,543,178 1,771,589 5,314,768 2,657,384 1,328,692 664,346 332,173 996,520 498,260 249,130 124,565 373,696 186,848 93,424 46,712 23,356 11,678 5,839 17,518 8,759 26,278 13,139 39,418 19,709 59,128 29,564 14,782 7,391 22,174 11,087 33,262 16,631 49,894 24,947 74,842 37,421 112,264 56,132 28,066 14,033 42,100 21,050 10,525 31,576 15,788 7,894 3,947 11,842 5,921 17,764 8,882

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