λ
Sequence Observatory

124,581

3 × 131 × 317
Deficient Odd Composite

Starting at 124,581, the Collatz iteration reaches 1 after 87 steps. The first transition is 373744; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 3 × 131 × 317
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 167,904
Proper Divisor Sum 43,323
Digit Sum / Digital Root 21 (Root: 3)
Adjacent Primes #124577 ← → #124601

Radix Representation

Decimal 124581
Binary 11110011010100101 (17 bits)
Octal 0o363245
Hexadecimal 0x1E6A5

Divisor Catalog (8)

1 3 131 317 393 951 41,527 124,581

Collatz Trajectory (87 steps to reach 1)

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

124,581 373,744 186,872 93,436 46,718 23,359 70,078 35,039 105,118 52,559 157,678 78,839 236,518 118,259 354,778 177,389 532,168 266,084 133,042 66,521 199,564 99,782 49,891 149,674 74,837 224,512 112,256 56,128 28,064 14,032 7,016 3,508 1,754 877 2,632 1,316 658 329 988 494 247 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236 118 59 178 89 268 134

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