1,617,386

2 × 808693

Starting at 1,617,386, the Collatz iteration reaches 1 after 163 steps. The first transition is 808693; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 808693

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,426,082

Proper Divisor Sum 808,696

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #1617373 ← → #1617391

Radix Representation

Decimal	1617386
Binary	110001010110111101010 (21 bits)
Octal	0o6126752
Hexadecimal	0x18ADEA

Divisor Catalog (4)

1 2 808,693 1,617,386

Collatz Trajectory (163 steps to reach 1)

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

1,617,386 808,693 2,426,080 1,213,040 606,520 303,260 151,630 75,815 227,446 113,723 341,170 170,585 511,756 255,878 127,939 383,818 191,909 575,728 287,864 143,932 71,966 35,983 107,950 53,975 161,926 80,963 242,890 121,445 364,336 182,168 91,084 45,542 22,771 68,314 34,157 102,472 51,236 25,618 12,809 38,428 19,214 9,607 28,822 14,411 43,234 21,617 64,852 32,426 16,213 48,640 24,320 12,160 6,080 3,040 1,520 760 380 190 95 286

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