1,631,326

2 × 815663

Starting at 1,631,326, the Collatz iteration reaches 1 after 194 steps. The first transition is 815663; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 815663

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,446,992

Proper Divisor Sum 815,666

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #1631309 ← → #1631341

Radix Representation

Decimal	1631326
Binary	110001110010001011110 (21 bits)
Octal	0o6162136
Hexadecimal	0x18E45E

Divisor Catalog (4)

1 2 815,663 1,631,326

Collatz Trajectory (194 steps to reach 1)

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

1,631,326 815,663 2,446,990 1,223,495 3,670,486 1,835,243 5,505,730 2,752,865 8,258,596 4,129,298 2,064,649 6,193,948 3,096,974 1,548,487 4,645,462 2,322,731 6,968,194 3,484,097 10,452,292 5,226,146 2,613,073 7,839,220 3,919,610 1,959,805 5,879,416 2,939,708 1,469,854 734,927 2,204,782 1,102,391 3,307,174 1,653,587 4,960,762 2,480,381 7,441,144 3,720,572 1,860,286 930,143 2,790,430 1,395,215 4,185,646 2,092,823 6,278,470 3,139,235 9,417,706 4,708,853 14,126,560 7,063,280 3,531,640 1,765,820 882,910 441,455 1,324,366 662,183 1,986,550 993,275 2,979,826 1,489,913 4,469,740 2,234,870

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