1,311,269

31 × 42299

Starting at 1,311,269, the Collatz iteration reaches 1 after 124 steps. The first transition is 3933808; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 31 × 42299

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,353,600

Proper Divisor Sum 42,331

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #1311263 ← → #1311287

Radix Representation

Decimal	1311269
Binary	101000000001000100101 (21 bits)
Octal	0o5001045
Hexadecimal	0x140225

Divisor Catalog (4)

1 31 42,299 1,311,269

Collatz Trajectory (124 steps to reach 1)

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

1,311,269 3,933,808 1,966,904 983,452 491,726 245,863 737,590 368,795 1,106,386 553,193 1,659,580 829,790 414,895 1,244,686 622,343 1,867,030 933,515 2,800,546 1,400,273 4,200,820 2,100,410 1,050,205 3,150,616 1,575,308 787,654 393,827 1,181,482 590,741 1,772,224 886,112 443,056 221,528 110,764 55,382 27,691 83,074 41,537 124,612 62,306 31,153 93,460 46,730 23,365 70,096 35,048 17,524 8,762 4,381 13,144 6,572 3,286 1,643 4,930 2,465 7,396 3,698 1,849 5,548 2,774 1,387

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