λ
Sequence Observatory

7,872,499

601 × 13099
Deficient Odd Composite

Starting at 7,872,499, the Collatz iteration reaches 1 after 173 steps. The first transition is 23617498; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 601 × 13099
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 7,886,200
Proper Divisor Sum 13,701
Digit Sum / Digital Root 46 (Root: 1)
Adjacent Primes #7872443 ← → #7872521

Radix Representation

Decimal 7872499
Binary 11110000001111111110011 (23 bits)
Octal 0o36017763
Hexadecimal 0x781FF3

Divisor Catalog (4)

1 601 13,099 7,872,499

Collatz Trajectory (173 steps to reach 1)

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

7,872,499 23,617,498 11,808,749 35,426,248 17,713,124 8,856,562 4,428,281 13,284,844 6,642,422 3,321,211 9,963,634 4,981,817 14,945,452 7,472,726 3,736,363 11,209,090 5,604,545 16,813,636 8,406,818 4,203,409 12,610,228 6,305,114 3,152,557 9,457,672 4,728,836 2,364,418 1,182,209 3,546,628 1,773,314 886,657 2,659,972 1,329,986 664,993 1,994,980 997,490 498,745 1,496,236 748,118 374,059 1,122,178 561,089 1,683,268 841,634 420,817 1,262,452 631,226 315,613 946,840 473,420 236,710 118,355 355,066 177,533 532,600 266,300 133,150 66,575 199,726 99,863 299,590

More profiles

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