641,749

641749

Starting at 641,749, the Collatz iteration reaches 1 after 97 steps. The first transition is 1925248; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 641749

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 641,750

Proper Divisor Sum 1

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #641747 ← → #641761

Radix Representation

Decimal	641749
Binary	10011100101011010101 (20 bits)
Octal	0o2345325
Hexadecimal	0x9CAD5

Divisor Catalog (2)

1 641,749

Collatz Trajectory (97 steps to reach 1)

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

641,749 1,925,248 962,624 481,312 240,656 120,328 60,164 30,082 15,041 45,124 22,562 11,281 33,844 16,922 8,461 25,384 12,692 6,346 3,173 9,520 4,760 2,380 1,190 595 1,786 893 2,680 1,340 670 335 1,006 503 1,510 755 2,266 1,133 3,400 1,700 850 425 1,276 638 319 958 479 1,438 719 2,158 1,079 3,238 1,619 4,858 2,429 7,288 3,644 1,822 911 2,734 1,367 4,102

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